PRE-FEASIBILITY. Pre-Feasibility Report

(1)

AJAY SHANKER

REG.NO. RQP/RNC/159/2013/A VALID UPTO 17/07/2023

1

PRE-FEASIBILITY

REPORT

.

Overview:

Mica is widely distributed and occurs in igneous, metamorphic and sedimentary regimes. Mica group represents 34 phyllosilicate minerals that exhibits a layered or platy structure. Commercially important mica minerals are muscovite (potash or white mica) and phlogopite (magnesium or amber mica). Granitic pegmatites are the source of muscovite sheet, while phlogopite is found in areas of metamorphosed sedimentary rocks into which pegmatite rich granite rocks have been intruded. It possesses highly perfect basal cleavage due to which it can easily and accurately split into very thin sheets or films of any specified thickness. It has a unique combination of elasticity, toughness, flexibility and transparency. It possesses resistance to heat and sudden change in temperature and high dielectric strength. It is chemically inert, stable and does not absorb water. For over hundred years, India has enjoyed the monopoly in the production and export of sheet mica in the world. Of late, there has been a steady downfall in the production of mica. This declining trend could be attributed to fall in the demand of natural mica in the world market due to technological improvements that facilitate use of reconstituted mica and emergence of mica substitutes. However, there are sufficient resources in the country to meet the domestic requirement and export demand.

Most important mica-bearing pegmatites occur in Andhra Pradesh, Bihar, Jharkhand, Maharashtra and Rajasthan. Occurrences of mica pegmatites are also reported from Gujarat, Haryana, Karnataka, Kerala, Odisha, Tamil Nadu and West Bengal. As per UNFC, the total resources of mica in the country as on 1.4.2010 are estimated at 532,237 tons out of which 190,741 tons are placed under reserves category and 341,496 tons under remaining resources category. Andhra Pradesh leads with 41% share in country's total resources followed by Rajasthan (21%), Odisha (20%), Maharashtra (15%), Bihar (2%) and balance (less than 1%) in Jharkhand

(2)

AJAY SHANKER

2 INTRODUCTION:

This mica mine deposit was initially leased in favor of M/s Chatturam Horilram (Pvt) Ltd, Jhumritelaiya, District – Kodarma (Jharkhand) in Chatkari village in thana No.-290 (Rajouli), District: Nawada, Bihar for the area of 1,786.98 acres or (723.180 hectare) in the forest area and mining operation was already been done by the Messrs Chatturam Horilram (Pvt) Ltd in the same area. It was surrendered to the state government of Bihar. The surrendered Notification was published in the notification of Bihar vide Gazette no-11, dated 14th March 1984.

On the basis of the aforesaid notification, M/s Sharda Mica Mining Co. applied for Mining lease for the part of same area i.e Chatkari village only in thana No.-290 (Rajouli), District: Nawada, Bihar for the area of 842.00 acres or (340.752hactares) and Mining Lease was granted & executed on 5th March, 1986 for the period of 20 years.

After grant of mining lease area, mining was consisted in block no- G/3 (37.83 acres) & H/4 (6.17) i.e. total area in both block 44.00 acres (17.81 hectares) only, due to reach deposition of mica. However, signing of pegmatite & mica schist is also observed in rest of the lease area i.e. 202.752hactares.

The period of 20 years of the mining lease was expired on 04/03/2006. Therefore, renewal application was applied for the area of 501.00 acres or (202.752hactares) on 03/03/2005 to the state Government Bihar. And renewal application is still pending to the State Government of Bihar.

Details of Mineralized area and Non Mineralized area.

Mineralized area (Retained Lease area & applied

for renewal of mining lease area) Non Mineralized area (Not included in the renewal application of mining lease area) Sr.No. Block No. Area in (acres) Block No. Area in (acres)

1 E/3 35.25 B/2 40.00 2 E/4 35.25 C/4 40.00 3 E/5 35.25 D/1(PART) 4.50 4 E/6 35.25 D/2 40.00 5 F/2 40.00 E/1(PART) 2.50 6 F/3 40.00 E/2 35.00 7 F/4 40.00 E/3(PART) 4.75 8 F/5 40.00 E/4(PART) 4.75 9 F/6 40.00 E/5(PART) 4.75 10 G/3 40.00 E/6(PART) 4.75 11 G/7 40.00 D/3 40.00 12 H/4 40.00 D/4 40.00 13 H/7 40.00 D/5 40.00 14 --- --- D/6 40.00

TOTAL AREA : 501.00ACRES =202.75 HECTARES TOTAL AREA : 341.00ACRE = 138.00 HECTARES

Honorable High Court Patna, (Ranchi Khand Pith) as well as Honorable Supreme Court, New Delhi passed an order as mentioned in the notification, which was published by the Deputy Secretary, Mines and Geology Department (Bihar's Government) vide letter no-102M, dated 06/01/1986 related to interpretation of

(3)

AJAY SHANKER

3 mining lease granted in broken-up land of protected forest i.e. forest land which was broken-up or cleared previously before the commencement of Forest Conversation Act 1980 for the area of 340.752 hectares or 842.00 acres. Due to that mining operation is being carried out & continued in the lease area.

This PFR (Project Feasibility Report of Sharda mica deposit over an area of 202.75 hectare in village: Chatkari, in thana No.-290 (Rajouli) district: Nawada, State: Bihar, of M/s Sharda Mica Mining Company, At & PO: Jhumritilaiya, District: Koderma, Jharkhand has been prepared to submit to MOEFCC under the EPA Act- 2006 expansion of production from 3220 MT/ annum to 7050 MT/annum and TOR approval for EC clearance. The lessee/company is the partnership firm.

Details Particulars

Initial lease was sanctioned M/s Chatturam Horilram (Pvt) Ltd, Jhumriteaiya, District – Kodarma (Jharkhand) & surrendered Notification was published in the notification of Bihar Gazette vide no-11, dated 14th March 1984. (Copy enclosed as annexure -1). After surrender by Initial lessee,

Further lease was sanctioned Partner: Rajendra Modi. M/s Sharda Mica Mining Company, At & PO: Jhumritilaiya, District: Koderma, Jharkhand-825409.

Lease agreement 20 year, [05-3-1986 to 04-3-2006] First Mining Lease Applied for renewal of Mining

Lease period. 20years, (05-3-2006 to 04-3-2026) First mining plan approval Not approved

Status of applicant Partnership firm Registration no. under Rule 45(1)

of MCDR (Amendment) Rule 2011

IBM-10119/2012 (Mine Code- 41BHR-17025. Other lease area details of lessee None

Limit of lease boundary Toposheet No.- 72 H/10 Latitude:240_{37.999’ N}

Longitude: 850_{38.662’ E}

Status of Renewal Application Form J is timely submitted now it is pending with state government

Production for last five years 378.28MT Grade of mica Pent

Status of Violation Rule 9(1),13(1),23B(2),29, 42(1)(c)(ii) & 45(7) violation cum show-cause has been issued vide IBM letter no.BIH/NAW/MC/195/RRO dated 17/10/2013

Status of MoEF Application for TOR is being filed for expansion. Category of Mines OTFM

Average Daily employment 15-20

The total excavated /degraded land during past & present mining operations is 17.81ha consisted within entire lease area.

(4)

AJAY SHANKER

4

CHAPTER -1

General

1.0 General

a) Name of the applicant: M/S Sharda Mica Mining Company Limited.

Partner: Shri Mukul Modi

Address : Near Bank of India, JhumriTelaiya,

District : Koderma, State : Jharkhand- Pin- 825409 . Mobile No: +91-9934559839. e-mail:[email protected] b) Status of the applicant:

M/s Sharda Mica Mining Co. is a private partnership firm. The owner is having much experience in mining, besides mining the company is in mineral trading business since last several years. The financial status of the lessee is very much sound. The list of partners of the company is enclosed as Annexure –5.

c) Mineral(s), which are occurring in the area and which the applicant intends to mine:

Mica is occurring in the area and applicant intends for same minerals under expansion of production.

d) Period for which the mining lease is propose to be granted/renewed:

The applicant has applied for mining lease (renewal) for mineral mica over an area of 202.75 hectares for a period of 20 years.

e) Name of the RQP preparing the PFR /mining plan: Shri Ajay Shankar,

Address : Residence: 402, SHUSHMA

APARTMENT, D.L. Bose Road,

Tharpakhna, Ranchi-834001 (Jharkha). Registration No : RQP/RNC/159/2013/A

Valid upto : 17/07/2023

(Photo Copy of RQP certificate is enclosed as Annexure-6) f) Name of prospecting agency:

(5)

AJAY SHANKER

5 Not applicable because it is a case of expansion.

g) Reference no. and date of consent letter from the State Government: Not applicable because it is a case of expansion

(6)

AJAY SHANKER

6 CHAPTER -2

(LOCATION AND ACCESSIBILITY) 2.0 (a): LOCATION AND ACCESSIBILITY: - Name of Mine: Sharda Mica Mine

Village: Chatkari, Taluka: Rajouli,

District and State: Nawada (Bihar), Pin code;

Khasra No./ Plot No./ Block Range / Felling Series etc.

DIST

/STATE THANA NO./ TEHSIL

VILLAGE Block

No. Area in (acres) Area (hectare) in OWNERSHIP OCCUPANCY TYPE OF LAND NAWAD

A / BIHAR

290 /

RAJAULI CHATKARI E/3 35.25 14.265 GOVERNMENT PROTECTED FOREST WASTE LAND E/4 35.25 14.265 E/5 35.25 14.265 E/6 35.25 14.265 F/2 40.00 16.188 F/3 40.00 16.188 F/4 40.00 16.188 F/5 40.00 16.188 F/6 40.00 16.188 G/3 40.00 16.188 G/7 40.00 16.188 H/4 40.00 16.188 H/7 40.00 16.188 Total --- 501.00 202.751

2.2: Lease Area (hectares) --- 202.751 hectare

2.3: Whether the area is recorded to be in forest (please specify whether protected, reserved etc.):

The area falls in the broken land as per court judgment. It was forest land prior to Forest Conservation Act and is featured in Survey of India Toposheet No. 72 H/10 (First edition) on a scale 1:50000. The latitude and longitude of the area is 24° 37.999’ N and 85° 38.662’ E

2.4: Ownership / Occupancy:- 202.751 ha broken land (As per court judgement), earlier it was forest land.

2.5 Existence of public road / railway line, if any nearby and approximate distance: No public road is passing through the lease area. Sharda Mica Mine of M/s. Sharda mica Mining Company is situated in the village Chatkari, Dist –Nawada, State- Bihar. But District head quarter Nawada is not directly approachable. The lease area is approachable from the Jhumri Telaiya. (NH-31) to Niru Pahari towards East (about 14 Km) and Niru

(7)

AJAY SHANKER

7 Pahari to Chatkari village towards North up to 20 KM through tar road. Chatkari village to lease area is Kacha (Jeepable) road about 1 KM towards west.

Nearest Highway:

The national highway no. 31 is joining Patna with Ranchi through the Koderma (as mentioned above).

Nearest Railway:

The nearest Railway Station from the area is Koderma which is 35 km from the Lease area. Koderma railway station is on Howrah-Delhi Cord railway line. Koderma railway station is conveniently located for transportation of mica. As most of the mica produced in the country is exported the same is transported by road to Calcutta which is about 340kms from Koderma. Generally mica is sold to the private and Govt. agencies at Koderma itself. Airport:

The nearest airport from the area is Gaya Airport, Gaya which is about 65 km from the lease area.

2.6: Toposheet No. with latitude and longitude:

Topo-sheet no. 72H/10 (First edition), Latitude: 240 38.500’00” N, longitude: 850 38.750’00” E

CO-ORDINATE OF LEASE BOUNDARY PILLAR POINT

COORDINATE PILLAR NO.1 PILLAR NO.2 PILLAR NO3 PILLAR NO.4 Latitude 240_{33.624’00” N 24}0_{33.72’00” N} ₂₄0_{34.62’00” N} ₂₄0_{34.109’00” N}

Longitude 850_{38.180’00” E 85}0_{36.96’00” E} ₈₅0_{34.252’00” E} ₈₅0_{34.297’00” E}

COORDINATE PILLAR NO.5 PILLAR NO.6 PILLAR NO.7 PILLAR NO.8 Latitude 240_{36.154’00” N 24}0_{38.129’00” N 24}0_{37.732’00” N} ₂₄0_{37.439’00” N}

Longitude 850_{38.448’00” E 85}0 _{38.430’00” E} ₈₅0_{38.344’00” E} ₈₅0_{38.272’00” E}

COORDINATE PILLAR NO.9 PILLAR NO.10 PILLAR NO.11 PILLAR NO.12 Latitude 240_{37.980’00” N 24}0_{37.980’00” N 24}0_{34.588’00” N} ₂₄0_{34.104’00” N}

Longitude 850_{38.718’00” E 85}0_{38.452’00” E 85}0_{38.316’00” E} ₈₅0 _{38.252’00” E} 2.7: Land Use Pattern (Forest, Agricultural, Grazing, Barren, etc.): There are no any raity lands in the lease area.

Particulars of land

Area in ha

Agricultural land NIL

Grazing land NIL

Broken Land(As per court judgement) 202.751 Ha

Forest Land Nil

Barren land NIL

(8)

AJAY SHANKER

8 Class Name Area in (sq km) % of Area in Total Area

Vegetation 206.58 71.57 Scrub Vegetation 47.22 16.35 Agriculture Land 20.93 7.25 Settlement 6.18 2.14 Fallow land 7.53 2.61 Mining 0.22 0.08 Total Area 288.66 100

(9)

AJAY SHANKER

9 **********

(10)

AJAY SHANKER

10

CHAPTER-3

GEOLOGY AND EXPLORATION

PART – A

3. GEOLOGY AND EXPLORATION:

3.1.(a): Briefly describe the topography and general geology and local / mine geology of the mineral deposit including drainage pattern.

3.1. Topography:

The area represents a rugged topography with a number of hillocks and very small nullahs in a repetitive manner. The highest hillocks are situated towards NE of the lease area. The maximum and minimum heights attained by the area are 323m and 220m from the M.S.L. respectively. There are three very small nullahs, which is crossing towards south to east of the lease area and are joined into one towards north east Nadi and flows from south to north east direction. These nullahs are seasonal and most of the times are dry except in rainy season.

No public road is passing through the lease area. The lease area is approachable from the Jhumri Telaiya.(NH-31) to Niru Pahari towards East (about 14 Km) and Niru Pahari to Chatkari village towards North up to 20 KM through tar road. Chatkari village to lease area is Kacha (Jeepable) road about 1 KM towards west. Chatkari village on the east is most populated in the region.

The area falls under the square nos. E/3, E/4, E/5, E/6, F/2, F/3, F/ 4, F/5, F/6, G/3, G/7, H/4 and H/7 part in protected forest. The entire area is covered with thick vegetation of thorny bushes and small trees.

3.2: REGIONAL GEOLOGY:

The Koderma district and the lokai-Indarwa area cover the southern part of Great Mica-Belt of Jharkhand and Bihar. Previously the Mica belt was known as Bihar mica belt which extends for a distance of 160 km having an average width of 25 kms. The mica belt stretches from Gurpa in Gaya district in the west through Nawada, Koderma, Hazaribag, Giridih in Jharkhand and Jamui as well as Bhagalpur district of the Bihar state in the east. Its maximum width is about 40 km at Koderma- Hazaribagh-Nawada area. The whole belt encompasses roughly 4,000 sq. km. around area and lies on the north fringe of Chotanagpur plateau and runs in an east-north east to west south west direction.

The type of rock exposed in the region consists of a series of meta- sediments like Mica-schist, quartz-schist, Micaceous-quartz-schist, hornblende schist and para amphibolite. The group of gneissic rocks consists of granite-gnesis, biotite-gnesis of Chhotanagpur granite gneissic complex which are younger to Meta sediments in age and are also occurring in association with the above rocks. The Mica schist is inter- bedded with bands of hornblende schist, talc schist, granulite and gneiss, Micaceous quartzite, several granitic bodies intruded all these rocks.

The coarse granite rocks are showing chilled contact effect with the adjoining gneisses rocks and show a faint foliation near the contact. On the other hand the granite &

(11)

AJAY SHANKER

11 schist are traversed by the dykes, quartz veins and pegmatite & mica schist. The pegmatite & mica schist penetrates the schistose & gneissose rocks used as tools of Mica search on surface. Mostly the Mica is occurring in the pegmatite & mica schist’s. The majority of the pegmatite & mica schist originates through the digestion & re-crystallizations of mica schist. The pegmatite & mica schist generally consists of plagioclase feldspar, quartz but in few cases it also contains garnet, tourmaline, and beryl. In Mica belt the granitic rocks constitute about 33% of the total area; some are Dome-shaped and lie in the surrounding area of the belt, whereas the metamorphic rocks is situated about 67% of total Mica belt.

General Geology :- Alluvium/soil.-Unconformity

Dolerite Pegmatite & mica schist & quartz veins. Intrusive granite.

Chhotanagpur granite gneiss- Porphyroblastic granite gneiss. Complex: Granite gneiss. Migmatitic granite gneiss. Unclassified meta sedimentary: Amphibolites, harnblende schist

Mica schist, quartz Mica schist Micacious quartz schist,quartzite

3.3: LOCAL GEOLOGY:

The entire area is covered with two litho logical units namely mica schist and pegmatite mica schist. The occurrence of major part of the area is recorded as mica schist with the emplacement of mica at places. Mineralogically the mica schist is comprised of quartz-biotite and muscovite with garnet and tourmaline at some places. Mica schists are altered much by heavy weathering and that has created problems to ascertain its behavior and trace its continuity in the surface. Pegmatite & mica schists are emplaced in the favorable locale such as schistosity plane, joints and hinge area of folds. In general the pegmatite & mica schists are comprised of medium to coarse grained quartz, feldspar (both plagioclase and potash), muscovite, biotite, tourmaline and garnet. The pegmatite & mica schist’s which are associated with muscovite mineralization are designated as mica-bearing pegmatite & mica schist and the pegmatite & mica schist which are devoid of mica mineralization are designated as barren pegmatite & mica schist. Structurally it appears that some pegmatite & mica schist’s are emplaced as pre-tectonic masses whereas the other type is found to be post-tectonic bodies. The major planar structure of the area is schist which is well defined by the preferred orientation of platy minerals.

Geology of applied area follows the same trend of regional geology of the area. Stratigraphically the area belongs to M.H. Vaishnan area and proved by exploitation of Pegmatite & mica schist’s over the previous lease period & as per geological plan and section. The massive pegmatite & mica schist has already been opened in the hill towards north east portion i.e. block no.-G/3 & H/4.

Mica schist is altered much by heavy weathering and that has created problems to ascertain its behavior and trace its continuity in the surface in peripheral part of the area but in this position, deposits of mica debra is more chances in quantity in this situation. Presently two pits are working in the lease area i.e. pit no-1 & pit no-2. Both the pits are situated in the slope of the hill. Pit no-1 is south east and another is eastern side around the hill slope.

(12)

AJAY SHANKER

12 The overall thickness of massive pegmatite & mica schist is exposed up to the hill top i.e. 24.00 m. General strike direction of massive pegmatite & mica schist is 155-m NW-SE with dip amount is 850_{towards SW. While the RL wise the mineralization is reached in} between 133m RL (upper portion) to 109m RL (bottom portion).

3.4: AREA OF ML: 202.75ha

Area of mineralization: Both quarries including hill portion is considered mineralized Zone in the block no: G/3 i.e. total area 16.187ha.

The other details of the area as follows:

GEOLOGICAL CHARACTERISTICS OF THE APPLED LEASE AREA

Pegmatite & mica schist with Mica mineralization: 16.187ha ( Keeping 155 m influence from the pit face)

OB Cover avg. thickness: 3 M.

Shiest with Mica / Pegmatite & mica schist depth is measured from 24 m and is taken over the G/3 AREA (continued exposed thickness)

Strike 155m Dip 850 _N

Physical Characteristics:

Color: mix Form: massive, fine to medium grained, Sp. Gravity: 2.7.0T/CM

Waste Material:

All the materials not conforming to the specifications of required grade of mica and which are required to be handled for mining out the ore, have been termed as waste material. The waste materials may be classified into the following forms:

(i) Overburden, overlying the ore body and the barren portion within the ore body.

(ii) Mica & Mica waste/ Dibhra filled within the granite & schist are traversed by the dykes, quartz veins and pegmatite & mica schist and barren portion in between the ore body.

(iii) Stripping waste to be handled in the pit/bench slopes during excavations for maintaining the 3m high benches.

Quantum of waste:

Total quantum of the waste required to be handled in respect of the total proved reserved has been computed under two heads:

(i) Soil cover or overburden (O.B)

(ii) Inter-burden including within the granite & schist are traversed by the dykes, quartz veins and pegmatite & mica schist and barren portion in between the ore body.

The quantum of the total stripping waste depends upon the actual total extent of the quarries to be finally explored. Hence there is a scope of enhancement of the total waste material in future depending upon the extent of excavations.

(13)

AJAY SHANKER

13

3.5. Details of Exploration

:

i) Exploration already done in the area::

Presently, massive pegmatite & mica schist vein has already been seen in the hill as well as in working quarry no-1 & 2, which are carried out through open cast mining. Same pegmatite & mica schist vein will be worked in future also till the continuity of the pegmatite & mica schist to some extent by underground development also. (Surface geological map has prepared on the development of the above study and enclosed as plate no- 4)

DETAILS OF CARRIEDOUT EXPLORATION OR PREVIOUS MINED OUT AREA:

S.

NO. EXCAVATED QUARRY NO. LOCATION SIZE LxWxD (m) RL (m) LOGGING

1. QUARRY-1 Latitude

240_{38.506’00” N}

Longitude 850_{38.25’00” E}

64mx38mx 12m 112 to

124 mRL Mica & Mica waste Dibhra filled within the granite & schist are traversed by the dykes, quartz veins and pegmatite & mica schist and barren portion in between the ore body. 2 QUARRY-2 Latitude 240_{38.105’00” N} Longitude 850_{38.456’00” E} 30mx14mx 9m 112 to 121 mRL

ii) Proposed exploration to be carried out:-

No exploratory work is proposed in fifth year development programme. Presently mining will be carried out in the massive pegmatite & mica schist vein deposited in the hill portion through opencast mining, after finished of massive pegmatite & mica schist vein deposited in the hill portion than mining working will be converted in to underground mining along with massive pegmatite & mica schist vein. When the bench levels will be formed extension holes will be put across the pegmatite & mica schist in both footwall and hanging wall on each level to prove the existence of any parallel pegmatite & mica schist. Extension holes shall be put at an interval of 15m to 20m in a staggered way in the vertical plane. The length of holes will from 10m to 15m depending on the circumstances. Extension holes of 32mm diameter will be drilled by jackhammers and the drill cutting shall be collected for examination.

3.6. Geological Reserve and Resource: (Computation of reserve by area of influence method):

The mineralization in pegmatite & mica schist varies widely and the available present day exploration techniques have not been able to predict the degree of mineralization, with any level of confidence. The pegmatite & mica schist under consideration has not been explored at all. Reserved estimated on any assumption will not be a representative one. Thus estimation of reserved & grade of mica cannot be possible to

(14)

AJAY SHANKER

14 assess in the pegmatite & mica schist vein. However, in view of the massive pegmatite & mica schist is deposited in the hillock & method of mining was carried out by opencast mining, it has estimated the reserved as per seen in quarry of the hillock. The pegmatite & mica schist vein has been considered for development has got surface exposure at 133m R.L. It is expected that the strike length will increase and a strike length of 155m has been considered up to depth of 24m & 109m RL. Some amount of pitting has been done on this pegmatite & mica schist. In absence of any exploration its strike length could not be ascertained but from the locations of the pits and from the behaviour of the parallel pegmatite & mica schist in the depth of present working an average strike length of 155m it considered to be a reasonable assumption. (All the reduced levels mentioned in drawings and reports are based on the assumed reduced levels of 24m in depth for the proved of the leasehold. It has got no relation with the bench mark). The width as observed in both the pits and surface varies from 14m to 40m and for the purpose of planning an average width of 27m has been considered.

As per above, stated in the geological reserve as per UNFC classification for mica mine cannot be possible to assess in the pegmatite & mica schist vein.

However, Geological reserved are assessed in view of the past five year production achieved in the pegmatite & mica schist vein& schist as shown in the Yeses Plan. (Enclosed as Plate No-Z and accordingly Feasibility study Report has been prepared, which is enclosed as Annexure-7

3.6.1: RESERVE:

Geological reserves are assessed in view of the past five year production achieved in the pegmatite & mica schist vein & schist as shown in the Yeses Plan. (Enclosed as Plate No-Z). All the R.O.M (waste or dibhra) is manual dressing, sizing & sorting etc is done at the mine site and waste or dibhra mica is packed in gunny bags and transported to the beneficiation plant at Jhumri Telaiya, District – Koderma. By processing Mica waste/waste/r.o.m. waste or dibhra mica are processed & upgraded. A Chemical analysis of the product is not required in mica. So upgraded mica or in form mica powder is sold to the consuming industries as per requirements of market or dealers/exporters.

3.6.2: Recovery with cut-off grade & tonnage factor, method of assessment. a): Cut – off grade:

There is no cut- off grade because all the waste or dibhra mica raised from the pit shall be treated in the beneficiation plant & pulverising to make powder form. Further, the mica powder product is being sold on the basis of sample and not on the basis of any fixed analysis.

b): Recovery:

Based on the experience of mining operation of last few years, it is observed that recovery of Mica waste/waste/ r.o.m. waste or dibhra mica is -1.5% from the pegmatite & mica schist and schist zone whereas 98.5% is intercalated waste.

(15)

AJAY SHANKER

15 3.7: Method of assessment:

The total lease area is 202.75ha out of that 16.187 hectare mineralization Zone area has been considered in the block no: G/3. This area is considerably explored and economic viability and feasibility study have been carried out based on previous mining or mined out area i.e. yeses plan. The economic axis, feasibility axis and geological axis have been categorized and based on this UNFC codification the reserved and a resource is made. There is no non- mineable part of the reserved in the lease area due to statutory barriers and U.P.L. The resources and reserved estimated is given below:-

Considering the above parameters, the different categories of geological reserved have estimated by cross sectional area method as follows.

GR= A x L x RF x TF Where:

GR= Geological Reserved (MT) A= Cross sectional Area (Sq.m) L= Length of influence (m) RF= Recovery Factor (%)

TF= Tonnage factor (MT/cum)

DETAILS CALCULATION OF RESERVE & RESOURCES

(a): MEASURED MINERAL RESOURCES

REF. SECTION RL SECTIONAL AREA INm2 IN m2 LENGTH OF INFLUENCE IN m VOLUME IN M3 T.F 1.5 RESERVED OF PEGMATITE & MICA SCHIST IN Tones RECOVERY 1.5% MICA RESERV ED IN Tones A-A' 118-121 1656 12 19872 1.5 29808 1.5% 447.12 B-B' 109-127 38556 25 963900 1.5 1445850 21687.75 C-C' 109-133 80990 25 2024750 1.5 3037125 45556.87 D-D' 109-133 84528 25 2113200 1.5 3169800 47547 E-E' 109-112 10656 25 266400 1.5 399600 5994 F-F' 109-112 8274 25 206850 1.5 310275 4654.12 G-G' 109-112 3627 25 90675 1.5 136012 2040.18 TOTAL 8528470 127925.04

(16)

AJAY SHANKER

16

(b): INDICATED MINERAL RESOURCES:

(c): TOTAL MINERAL RESERVED

3.7.1: CLASSIFICATION OF RESERVED AS PER UNFC SYSTEM (a) Proved Mineral Reserve (111):

Detailed geological survey has been carried out, exposures have been found, exploration by previous mining was carried out, two pits were opened which later on converted into quarries. The proved reserve has been estimated based on the actual thickness of the ore body as exposed in quarry faces. Thus, geological axis can be brought under G1. The massive pegmatite & mica schist body considered under proved category has been estimated with full confidence and there is no statutory restriction. Infrastructure resources are already available. Thus, the reserved can be brought under F1. On economic front, the end use, land use pattern, working plan is already known or designed, the ore of this area is commercial as to the demand of buyers, thus, and the reserved can be brought under E1. Thus proved reserved can be classified under 111 groups.

The total lease area is 202.75ha out of that 16.187 hectare mineralization Zone area has been considered in the block no: G/3. This area is considerably explored and economic viability and feasibility study have been carried out based on previous mining or mined out area i.e. yeses plan. The economic axis, feasibility axis and geological axis have been categorized and based on this UNFC codification the reserved and a resource is made. (b) Probable Mineral Reserve (122).

As the floor and side walls of the existing pits and trial pits are in ore zone, a further influence up to 109 m R L depth and 5m laterally has been considered. This lateral REF. SECTION RL SECTIONAL AREA INm2 INm2 LENGTH OF INFLUENCE IN m VOLUME IN M3 T.F _1.5 RESERVED _OF PEGMATITE & MICA SCHIST IN Tonnes RECOVERY 1.5% MICA RESERVED IN Tonnes A-A' 113-118 552 12 6624 1.5 9936 1.5% 149.04 B-B' 104-109 7711 25 192775 1.5 289162. 5 4337.43 C-C' 104-109 16198 25 404950 1.5 607425 9111.37 D-D' 104-109 16905 25 422625 1.5 633937.5 9509.06 E-E' 104-109 2131 25 53275 1.5 79912.5 1198.68 F-F' 104-109 1655 25 41375 1.5 62062.5 930.93 G-G' 104-109 725 25 18125 1.5 27187.5 407.81 TOTAL 1709623.5 25644.32

MEASURED MINERAL RESOURCES 127925.04 INDICATED MINERAL RESOURCES 25644.32

(17)

AJAY SHANKER

17 extension of the ore body is kept under probable category assuming that the ore body may continue further. Thus the geological axis can be brought under G2. On feasibility axis, there will be no displacement but the lease period has expired and area is under renewal, mining operation is being carried out under deemed extension period. Thus, the reserved can be brought under F2 On the economic front, based on previous extraction of mica from pegmatite & mica schist vein in the area, the grade of waste or dibhra mica is assumed to be the same. Hence it can be grouped under E1. Thus probable reserved can be classified under 122 groups.

(c) Inferred Mineral Reserve (333).

The total lease area is 202.75ha out of that 16.187 hectare mineralization Zone area has been considered in the block no: G/3. But rest area 187.563hectare has not been explored but pegmatite & mica schist vein is exposed in several places with in the lease area. Therefore, mica is not exhausted in the lease area. In view of that the mica is available in pegmatite & mica schists, which are exposed in several places. But presently grade & quality of mica is un-known. The present market scenario this mica is not profit marketable so we keep it in E3. It also found that the quality of pegmatite & mica schist deposit is gradually low in depth wise. So we keep it G3 and F3 category. In this area there is only pegmatite & mica schist vein is exposed and it is failure of mineralization, thus inferred can be classified under 333 group has not been estimated.

PRESENTATION OF MINERAL RESOURCES/ RESERVED AS PER UNFC:

CATEGORY CODE QUANTITY

IN TONNES GRADE IN %

Total Resources (A+B) - 153569.36 -

A

Reserved Proved Probable (111) (122) 127925.04 25644.32 (121)

B Remaining Resources Feasibility Mineral

Resources (211) - Pre-feasibility Mineral Resources (222) - Measured Mineral Resources (331) - Indicated Mineral Resources (332) - Indicated Mineral Resources (333) - Reconnaissance Mineral Resources (334) - PRODUCTION SCHEDULE

Due to good market condition, the proposed production target has been planned to the ton of 7570 tonnes/year (max). To meet this requirement, existing quarry no. 1 &2 have been considered for the planned period. The total recoverable waste or dibhra mica of the area is

(18)

AJAY SHANKER

18 153569.36 tons and 255989.15 (Debra). So, taking the maximum production target of 7570 tons or 12700 (Debra) per year, the life of the mine will be 100 years.

Intercalated waste:

The waste materials being generated from the working Quarry is mainly weathered soil and shiest etc. Besides that, there is a generation of intercalated waste which constitutes about 98.5% of the excavation in pegmatite & mica schist zone. These waste materials shall be dumped in the earmarked site which will later on utilized to reclaim the mined out area by backfilling & mine Road also

3.7: Grade: Chemical composition of the Mica:-

Muscovite chemical formula for KAl2 (AlSi3O10) (OH)2; Magnesium Silicon muscovite chemical formula of (Fe2 +, M g) (Fe3 +, Al3 +) (AlSi7O20) (OH)4; sericite chemical formula for KAl2 (Si, Al) 4O10 (OH, F)2; The chemical formula for Mica KMg3 (AlSi3O10) (F, OH)2 ;Mica such aluminium silicate minerals, with continuous layered silicate structures, with the complete very cleavage, Stripping to be elastic sheet, quality soft curved, transparent colourless, with thick pieces of translucent gray, brown, light green, red roses, with glass pearls and silk or gloss, hardness 2.5 ~ 3, the proportion of 2.75 - 3.0, the acid. Mica unit general Opaque, The Mica chemical composition is given in the Table - 1.

Table - 1

Mica chemical composition (Chemical Formula: K2O·Al2O3·SiO2) , Specific Gravity : 2.7 & Hardness on Mohs scale of hardness: 2 - 2.25.

Ingredients _SiO

2 MgO Al2O3 Cao Fe2O3 K2O Na2O Loss on _Ignition Content % 44.3 0.62 31.21 0.75 5.74 10.58 1．17 4．97

*****

(19)

AJAY SHANKER

1

CHAPTER – 4

MINING

4. 0 MINING:

4.1: Briefly describe the existing / proposed method for developing / working the deposit with all design parameters.

4.1.1: Existing method of mining:

The work is confined in blocks i.e. G/3 & H/4 at present and mining is being carried out by the open cast method of mining with formation of benches by drilling and blasting and it comes under Category – B (Other than fully mechanized category). Working benches are kept 3m high and 3 m wide. One or two benches in top hill and generally one top bench in the soil and another 2nd_{bench are in overburden. During the mining operations will involve} drilling, blasting, mucking, loading, transport of mica and waste etc. Certain operations may be used shovel & dumper for removal of overburden and others may be done manually. Drilling is being carried out by air leg mounted jackhammers. Compressed air supplied to the jackhammers from a portable tractor mounted compressor. Loading point of view mica & wastes are being transported by truck/dumper to user industries. Loading of mica & wastes in to truck dumper is being done manually. The last production (since 2005-06 to 2012-13) of ore is given below in the Table -2.

Table -2: Ore Production Details

Year Production (MT) 2005 379.4 2006 492 2007 745 2008 647.5 2009 659 2010 647 2011 567.3

4.1.2: Proposed Method of Mining:

The massive pegmatite & mica schist with weathered schist has been considered for development has got surface exposure in the hill at 133m R.L. So it is expected that Proposed mining will be carried out by opencast mining and as per existing method of mining operation will be continued in the same place / area as per shown the location & involve drilling-blasting (time to time because massive pegmatite & mica schist with weathered schist softer than original pegmatite & mica schist), mucking, loading, transport of mica and waste etc. Certain operations will be mechanized (1.1 cum capacity shovel) and others will be done manually i.e. using hand tools such as spades, hammer, crowbar, and chisel. Drilling will be carried out by air leg mounted jackhammers. Compressed air will be supplied to the jackhammers from a portable tractor mounted compressor machine. Raising and transportation from the quarry to the loading site is proposed to be done by

(20)

AJAY SHANKER

2 shovel and dumper/truck combination. The production 1-3 benches of 3m height at the given below coordinates. During the first five years of development & production, is proposed from top 133mRL to bottom 109RL and in ensuing year the area will be partly developed in slicing pattern by benches to the form of top of the central part of hill including pit -1 & 2 . Site services will be provided in North east side of the area. The height & width of the bench will be maintained 0.5m for the 1st bench in Soil only and for others benches height & width of the bench will be maintained 3.0m. A pit slope of 37 to 400_{is generally maintained.}

All the mining operations including five year development will be done in following coordinates as given in Table-3:

Table -3: Coordinates of the mining area

COORDINAT

E POINT NO.1 POINT NO.2 POINT NO3 POINT NO.4 Latitude 240_{37.980’00” N} ₂₄0_{38.042’00” N 24}0_{38.042’00” N 24}0_{38.104’00” N}

Longitude 850_{38.718’00” E} ₈₅0_{38.718’00” E} ₈₅0_{38.753’00” E 85}0_{38.753’00” E}

COORDINAT

E POINT NO.5 POINT R NO.6 POINT NO.7 POINT NO.8 Latitude 240_{38.104’00” N} ₂₄0_{38.175’00” N 24}0_{38.175’00” N 24}0_{38.198’00” N}

Longitude 850_{38.718’00” E} ₈₅0_{38.718’00” E} ₈₅0_{38.570’00” E 85}0_{38.481’00” E}

COORDINAT

E POINT NO.9 POINT NO.10 --- --- Latitude 240_{38.198’00” N} ₂₄0_{37.980’00” N ---} _---

Longitude 850_{38.481’00” E} ₈₅0_{38.452’00” E} _--- _---

4.1.3: YEAR WISE DEVELOPMENT AND PRODUCTION FOR THE FIVE YEARS:

Details of five years development & Production are assumed below:- First Year:

During the year about average 4016 m2_{area will be developed towards top of hill to} bottom from previous year excavation with one production bench of 50m in massive pegmatite & mica schist vein during the year the RL will reach from 133m to 127m The bench advancement will be upper to down side of the hill. Thus in this year quarry bottom will be 127m RL. The bench advancement will be top to bottom for systematic development as shows in the Table –4.

Table –4 PROPOSAL -1st YEAR DEVELOPMENT

BENCH

NO.(SOIL) BENCH RL AREA INm2 THICKNESS _{IN m} VOLUME _{IN m}3 T.F SOIL IN (T) Mica (T)

1 121 870 0.5 435 1.5 652.5

MICA

SECTION

BENCH RL AREA m2 THICKNESS _{IN m} VOLUME _{IN m}3 T.F PEGMATITE & _{MICA SCHIST}

WASTE 98.5% MICA 1.5% D-D' 121-115 4016 3 12048 1.5 18072 271.08 E-E' 127-121 4412 3 13236 1.5 19854 297.81 TOTAL 37936 568.89

(21)

AJAY SHANKER

3 Grade: As filler purpose in Detergent. Pent and Fertilizer industry

Second year:

During the year about average 8556m2_{areas will be developed towards top of hill to} bottom from previous year excavation with one production bench of 92m in massive pegmatite & mica schist vein during the year the RL will reach from 227m to 124m The bench advancement will be upper to down side of the hill. Thus in this year quarry bottom will be 124m RL. The bench advancement will be top to bottom for systematic development as shows in the Table –5 .

Table –5

PROPOSAL - 2ND YEAR DEVELOPMENT

MICA

SECTION

WASTE 98.5% MICA 1.5% C-C' 130-124 2430 3 7290 1.5 10935 164.03 D-D' 115-112 2102 3 6306 1.5 9459 141.88 E-E' 130-124 4024 3 12072 1.5 18108 271.62 TOTAL 38502 577.53

Grade: As a filler purpose in metallic paints Third Year:

During the year about average 8472-m2_{area will be developed towards top of hill to} bottom from previous year excavation with one production bench of 124m in massive pegmatite & mica schist vein during the year the RL will reach from 124m to 121m the bench advancement will be upper to down side of the hill. Thus in this year quarry bottom RL will be 121m. The bench advancement will be top to bottom for systematic development as shows in the Table –6.

Table –6

PROPOSAL- 3rd YEAR

MICA

SECTION

WASTE 98.5% MICA 1.5% B-B' 127-121 4612 3 13836 1.5 20754 311.31 C-C' 133-127 3860 3 11580 1.5 17370 260.55 TOTAL 38124 571.86

(22)

AJAY SHANKER

4 Fourth Year

During the year about average 9576m2_{area will be developed towards top of hill to bottom} from previous year excavation with one production bench of 102m in massive pegmatite & mica schist vein during the year the RL will reach from 121m to 118m the bench advancement will be upper to down side of the hill. Thus in this year quarry bottom will be 118m RL. The bench advancement will be top to bottom for systematic development as shows in the Table –7.

Table –7.

PROPOSAL- 4TH YEAR MICA

SECTION

WASTE 98.5% MICA 1.5% A-A' 121-118 1810 3 5430 1.5 8145 122.18 B-B' 133-127 3860 3 11580 1.5 17370 260.55 C-C' 133-127 2794 3 8382 1.5 12573 188.60 D-D' 133-127 2108 3 6324 1.5 9486 142.29 TOTAL 47574 713.62

Grade:- Waste or dibhra mica (Dibhra) Fifth Year

During the year about average 10572-m2_{area will be developed towards top of hill to} bottom from previous year excavation with one production bench of 107m in massive pegmatite & mica schist vein during the year the RL will reach from 118m to 115m the bench advancement will be upper to down side of the hill. Thus in this year quarry bottom will be 115m RL. The bench advancement will be top to bottom for systematic development as shows in the Table –8.

Table –8

PROPOSAL- 5TH YEAR

MICA

SECTION

WASTE 98.5% MICA 1.5% B-B' 127-121 3840 3 11520 1.5 17280 259.2 C-C' 127-121 3628 3 10884 1.5 16326 244.89 D-D' 127-121 2108 3 6324 1.5 9486 142.29 TOTAL 43092 646.38

(23)

AJAY SHANKER

5 4.1.4: DETAILS OF YEAR WISE DEVELOPMENT AND ASSUMED PRODUCTION

Five year development and waste dumps plans and also year wise plan & sections are shown in plate no-5,6,7,8 & 9.

4.1.5: Indicate proposed rate of production when the mine is fully developed, and the expected life of the mine and the year from which effected.

Mine life

Because of the erratic distribution of mica in pegmatite & mica schist which can not be predicted by any exploration technique available as on date it is not possible to assess the reserved. In absence of the reserved estimate, the life of the mine cannot be determined. However, as per assessment of reserved as given in the para 3.6, Mine life has been estimated as: Production targeted – 7050tonnes /annum.

Reserved estimated as per UNFC: 153569tonnes Mine life: 153569 /7050 = 100 years

4.1.6: CONCEPTUAL MINING PLAN FOR ENTIRE LEASE

PERIOD/CONCEPTUAL PERIOD BASED ON THE GEOLOGICAL MINING AND ENVIRONMENTAL CONSIDERATIONS:

i) CONCEPTUAL EXPLORATION:

No exploratory work is proposed in fifth year development programme. Presently mining will be carried out in the massive pegmatite & mica schist vein deposited in the hill portion through opencast mining, after finished of massive pegmatite & mica schist vein deposited in the hill portion than mining working will be converted in to underground mining along with massive pegmatite & mica schist vein. When the bench levels will be formed extension holes will be put across the pegmatite & mica schist in both footwall and hanging wall on each level to prove the existence of any parallel pegmatite & mica schist. Extension holes shall be put at an interval of 15m to 20m in a staggered way in the vertical plane. The length of holes will from 10m to 15m depending on the circumstances. Extension holes of 32mm diameter will be drilled by jackhammers and the drill cutting shall be collected for examination. Present exploration is in the form of excavations & degraded in block G/3 of 16.187 ha, the massive pegmatite & mica schist is deposited in the hillock. The pegmatite & mica schist vein has been considered for development has got surface exposure in the pit no 1 & 2. It is expected that the strike length of 155m has been considered up to depth of 24m & 133mRL to 109mRL.

EXPLORATION

The mineralization in pegmatite & mica schist varies widely and the available present day exploration techniques have not been able to predict the degree of mineralization, with any level of confidence. The pegmatite & mica schist under consideration has not been explored at all. Reserved estimated on any assumption will not be a representative one.

(24)

AJAY SHANKER

6 Thus estimation of reserved & grade of mica cannot be possible to assess in the pegmatite & mica schist vein. However, in view of the massive pegmatite & mica schist is deposited in the hillock & method of mining was carried out by opencast mining, it has estimated the reserved as per seen in quarry of the hillock. The pegmatite & mica schist vein has been considered for development has got surface exposure at 109 to 112m R.L.

ii) CONCEPTUAL DEVELOPMENT

a): The work is confined in on blocks i.e. G/3 at present and mining is being carried out by the open cast method of mining with formation of benches by drilling and blasting and it comes under Category – B (Other than fully mechanized category). Working benches are kept 3 m high and 3 m wide. One or two benches in top hill and generally one top bench in the soil and another 2nd bench is in overburden. During the mining operation involve drilling, blasting, mucking, loading, transport of mica and waste etc. Certain operations may be mechanized and others may be done manually. Drilling is being carried out by airleg mounted jackhammers. Compressed air supplied to the jackhammers from a portable tractor mounted compressor. Loading point of view mica & wastes are being transported by truck/dumper to user industries. Loading of mica & wastes in to truck dumper is being done manually.

b) Following pits are available in the area at present: Both quarry are converted in to one quarry as given in table –9.

Table –9:

PIT NO. BROKEN AREA HA PIT BOTTOM AREA HA

BENCHES OVERALL SLOPE Size of

Bench BENCH NO Q-I 1.77 0.86 3x3 2 450

4.1.7: LOCATIONS ARE SHOWN IN SURFCE PLAN & SURFACE GEOLOGICAL PLAN.

a) Approximately pegmatite & mica schist volume generated so far from the mine = -136818 M3

(Area broken-1.77ha X thickness of ore zone- 18 X Recovery achieved at time-1.5% )= 4779tonnes

b) Waste generated so far from the mine area=114586cum. c) Soil generated so far from the mine = 435cum

4.1.8: LOCATIONS ARE SHOWN IN THE FIVE YEAR DEVELOPMENT PLAN Mica to be produced during proposal period = 7050tonnes/annum

Waste to be generated during proposal period = 114586cum. Soil to be generated =435cum

Following pits will be available at the end of conceptual period

(25)

AJAY SHANKER

7 4.1.9: CONCEPTUAL OVERBURDEN DUMP MANAGEMENT:

The Conceptual dumping area is chosen within the block no G/3 ultimate pit limit on ground which may not cause any land or water pollution.

a) Following OB dumps are available in the area

Presently there is 81258cum OB dumps within the block noG/3 or lease area b) Following OB dumps will be available at the end of proposal period:

During the proposal period 114586cum waste will be generated & dumped within the block no-3 and part of it’s will be used for road construction and its maintenance

c) Following OB dumps will be available at the end of conceptual period:

Present day exploration techniques have not been able to predict the degree of mineralization, with any level of confidence. The pegmatite & mica schist under consideration has not been explored at all. Dump estimated on any assumption will not be a representative one. Thus estimation of dumps cannot be possible to assess in the pegmatite & mica schist vein. However, in view of the massive pegmatite & mica schist is deposited in the hillock & method of mining was carried out by opencast mining, however, all the generated waste will be used at the time of stopping stage of the mine.

4.1.10: Disposal of Sub grade mineral:

No Sub grade mineral will be generated; all the ROM will be sold out. Environmental monitoring:

Noise, air, water and other environmental parameters will be monitored periodically to have a close check on the environmental pollution. Spraying of water on haul roads, dust arrester on drills, prevention of vibration by utilization of minimum quantity of explosive per delay, massive plantation along road and other areas will be taken up to restrict the nuisance caused by mining activities. At the end of conceptual period the area will have water logged pits surrounded from all the sides by plantation, afforested dumps and minimum of roads with avenue plantation to reach the sites. As reflected in the table -10:- Table –10: (Afforestation plan up to conceptual period)

Name of Block no. Location No. of saplings planted Area covered (Ha) G/3 Afforested surrounded pits,

dumps & Roads 5136 4.28

Total 5136 4.28

Total leasehold area constituted forestland before the grant of mining lease. There are no any raiaty lands in the lease area.

e) RECLAMATION AND REHABILITATION STATUS: a) Present reclamation and rehabilitation is nil.

(26)

AJAY SHANKER

8 c) No backfilling will be available at the end of lease period

f) Conceptual land use.

At the end of conceptual period the total area will be developed 14.7 ha at a depth of average 29m from the top of hill (average on sloping topography). Point wise details of conceptual mining plan as on survey date is given in Table -10:

Table –10: Land Use Plan

Particulars Existing in

ha At the end of 5 th

year.-: At the end of Conceptual Period:

Old pits /trenches etc 0.253 NA NA

Active pit 0.546 1.698

Old dumps 3.769 NA NA

Active Dump 1.21 2.66 12.66

Retaining wall settling

tank & garland ) --- 0.1 0.21

Mineral Storage 0.06 0.06 0.06 Reclaimed Area NA NA Road 1.194 NA NA Infrastructure 0.1 0.1 0.1 Greenbelt Total 6.586 3.466 14.728

* The size of the quarry and pattern of method of mining will not be changed during the end of life of the mine because, mining will be continued till the finished the massive pegmatite & mica schist as well as mica schist vein deposited in the hill portion or the persistence of minerals in depth; if it will be continued in depth after pit limit than method of mining will be converted in to underground method along with massive pegmatite & mica schist as well as mica schist. Only waste material will be increased as well as green belt.

4.1.11: OPENCAST WORKING:

SALIENT FEATURES OF THE MODE OF WORKING:

Proposed mining operations will be carried out by opencast method of mining using hand tools such as spades, hammer, crowbar, chisel with drilling and blasting etc. Loading of mineral in to truck/ dumper will be done manually by head load using can basket and tasla etc.

4.1.12: LAYOUT OF MINE WORKINGS FOR FACES AND SIDES FOR DISPOSAL OF OVERBURDEN/ WASTE:

8428m2_{will be developed during first five years including additional area also in the} Block G/3 part of the area with one production benches of 3m height and advancement for

(27)

AJAY SHANKER

9 first to fifth year will be towards top to bottom of the hill during the period of proposed mining the top of the hill RL will range from 133m while the average pit bottom RL will reach up to 115m on general sloping topography, thus the lease area will systematically developed .Proper bench height will give a proper shape to individual bench and slope will not be less than 45˚. Layout of mine working and sites for waste are shown in plate no. 5,6,7,8,&9.

(i): Extent of mechanization:

Since the mine is proposed to be semi-mechanized means, to work for 1shift 15 nos (unskilled & semi –skilled labourer) of labourer is required.

Drilling parameters:

In this mine wherever necessary jackhammer drilling will be carried for loosing the overburden & pegmatite & mica schist vein. One number of 33 mm diameter Jackhammers are sufficient for drilling as per the below calculation.

D = Diameter of the hole = 33 mm H = Bench height = 3.0m

L = Length of the drill hole = 3.0 m B = Burden = 1.5 m

S = Spacing = 1.5 m

i)Total volume of ore to be broken/hole = B x S x L = 6.75 m3 ii) Total maximum excavation in a year = 9120 m3_/year

About 70% of the ore is needed for the blasting purpose and rest can be directly handled by the excavator.

iii)Therefore volume needed for drilling = 9120 x 0.7 = 6384m3_/Year iv) Total number of drill hole required in a year = 6384/6.75 = 945.7(nos.)* v) Total length of drill hole in a year = 945.7 X 3.0 = 2837m

vi) Speed of the Jackhammer = 7 m/hr vii) Availability of the jackhammer = 90%

viii) Effective working hours per shift = 6 hr/shift ix) Number of working days in a year = 260 days x)Number of shifts/day = 1

xi) Length of the drill to be effected per year per one Jackhammer = 260 * 7 * 6 * 1 * 0.9 = 9828 m

xii). Number of Jackhammers = = 2837/9828 = 0.288 (nos),i.e= one Jackhammers Total Jack hammer requirements

Type Nos. Hole diameter

(mm) Capacity (m/hr) Make Motive power Jack Hammer 1 33 7 Atals Copco Diesel

Loading parameters:

In this mine, wherever necessary shovels are used for excavation and loading purposes of waste & overburden.

C = Bucket capacity = 0.9 m3 F = Bucket fill factor = 0.9

(28)

AJAY SHANKER

10 S = Swell factor of the ore = 0.8

t = Cyclic time for 900 swing of shovel for one pass = 60 s e = Shovel efficiency = 0.85

n = Number of shifts per day = 1 h = Hours per shift = 6

w = Working days in a year = 260 days/year

A.Output/shovel/hour = (C * F * S * 3600) /t = (0.9 * 0.9 * 0.8 * 3600)/60 = 38.88 ≈ 39 m3

B.Output/shovel/Year = 39 * h * n * w * e = 39 * 6 * 1 * 260 * 0.85 = 51714 m3 C. Total excavation/ year = 9120 cum

D. Output of one shovel/year = 51714 m3

E.Total number of shovel required = 9120 /51714 = 0.040 ≈1

F. Total number of shovel required to excavate and loading the same material = 1. Transportation:

In this mine tippers are used for transporting the excavated material to overburden dump/stockyard.

Tipper /Dumper capacity = 4.5 m3

Number of passes of shovel for one Tipper /Dumper = (Tipper capacity)/ (Shovel bucket capacity * Bucket fill factor * swell factor)

Number of pass for one tipper = 4.5/ (0.9 * 0.9 * 0.8)= 6.94 ≈ 7 (ii). SURFACE TRANSPORT:

Mica sorted out in the pit is packed in gunny bags and these gunny bags are hoisted to the surface. Mica from the mine head is transported in small truck (10 tonnes capacity) or jeep to the applicant’s plant at Gajhandi Road. The distance involved is 40 kms. In the plant, processed mica will be exported.

Tipper cycle time:

Loading time = Number of shovel passes * Shovel time cycle = 7 * 60 = 420 s

Hauling time of dumper: Average lead (km)/Speed of the dumper (km/hr) = 0.5/15 = 0.03333 hr = 120 s

Unloading time = 60 s

Return time of dumper = 0.5 (Km)/20 (Km/hr)= 90 s Spotting time = 60 s

Total tipper cycle time = 420 + 120 + 60 + 90 +60 = 750 s = 12.5 min Number of tippers required:

Total annual excavation =9120 m3

Excavation/day = 9120 m3/260 = 35.07 m3 Tipper capacity = 4.5 m3

Fill factor = 85%

Use factor = 4.5 * 0.85 = 3.825 m3 Availability of the tipper = 50% Average tipper cycle time = 12.5 min

Average trips/day/tipper = (6 hrs * 60 * 0.5)/12.5 = 14.4

Average volume to be handled by one tipper/day = 14.4 * 3.825 = 55.08 m3 Number of tippers required = (35.07 cum/y )/55 = 0.57 nos. i.e one

(29)

AJAY SHANKER

11 Extent of Mechanization:

Describe briefly including the calculation for adequacy and type of machinery and equipment proposed to be used in different mining operations.

(1)The following machines are proposed to be deployed to carry out mining operation in this mine as given in the Table - 11.

Table –11: List of machinery

No. Type _Nos. _{Size / capacity} _Make Motive Power 1 Jack hammer 1 33 mm dia with 7m

/ hour drilling capacity

Atlas Copco Diesel 2 Tractor mounted

air-compressor 01 100-110 cfm TATA Diesel 3 Tippers/ dumpers 2 10 tones TATA Diesel 4 Excavators 01 0.9 m3 TATA Diesel 5 Mining implements like

crowbars, pick axes, spades, chisels, etc.

As per

requirement --- --- --- 6 Water tanker 01 12,000 liters --- Diesel

(2) Loading equipment:

Loading will be done by manual & mechanically Transport equipment:

Tippers/ dumpers (10 tone capacity) will be deployed for transporting the excavated waste & mica.

(4) Transport from mine-head to the destination. Describe briefly the transport system (Please specify):

Mica waste/waste/ r.o.m. waste or dibhra mica at the mine will be separated at the pit mouth in two qualities, i.e. waste or dibhra and waste/waste. This will then be transported in small truck (10 tonnes capacity) to the beneficiation plant in the name of M/s Modi Mica Enterprises at Gajhandi Road in Village – Gumo, P.S. Jhumri Telaiya, District – Koderma situated at a distance of 40 Km. By processing, the Mica waste/waste/ r.o.m. waste or dibhra mica is upgraded to exportable from and supplied to the dealers/exporters. Details are given in the Para -8.

(5) Miscellaneous:

All machinery related to the past mining operation of the deposit has been covered earlier also.

(30)

AJAY SHANKER

1

CHAPTER-5: BLASTING

5.0

Blasting

5.1 In original pegmatite & mica schist 5.1.1 Broad parameters of blasting

H = Height of bench = 3.0 m L = Length of drill hole = 3 m B = Burden =1.5 m

S = Spacing = 1.5 m

D = Diameter of the blast hole = 33 mm ρ = Density of the explosive = 800 kg/m3

VR = Volume of broken ore = B * S * L =1.5 * 1.5 * 3.3 = 6.75 m3 Blasting pattern = Series

5.1.2: Explosive consumption:

Powder Factor of Gunpowder with safety fuse or special gelatin having 80%) = (Total quantity of ore blasted/hole)/ (Total quantity of explosive required /hole) = 6.75/1.5 = 4. 5 m3/ kg .

5.1.3:Explosive Consumption a.Powder factor: 4. 5 m3_{/ kg .} b.Yearly production; 615T

c.85% of excavation; = 522.75 ton

d. Average daily excavation: 522.75 /260=-2.010say 2t

e. Average quantum of explosives to be required daily=2/6 =about 0.333kg 5.1.4: WHETHER SECONDARY BLASTING IS NEEDED:-

Secondary blasting will not be needed. 5.1.5: STORAGE OF EXPLOSIVE: -

As this is the renewal of lease, lessee is already purchasing purchase explosive from the authorized agency holding the license from the Controller of Explosives Agra or Nagpur. In the mean time it is advised for applying explosive license.

5.1.6: PRECAUTIONS TO BE OBSERVED DURING DRILLING AND BLASTING:-

All the necessary precautions such as hoisting of red flag at a safe distance, alarming the people by whistling and shouting will be taken before blasting. A qualified blaster having blasters certificate will do blasting. Muffle blasting and wet drilling will be done to control flying rock particles to avoid effect of blasting on nearby area.

(31)

AJAY SHANKER

2

CHAPTER-6

MINE DRAINAGE

6. MINE DRAINAGE

The area represents a rugged topography with a number of hillocks and very small nullahs in a repetitive manner. The highest hillocks are situated towards north east of the lease area. The maximum and minimum heights attained by the area are 323m and 220m from the M.S.L. respectively. Mining will be carried out on the top of hill, so there will be no problem of water drainage. This is all the more true as the area is predominantly rocky. Due to peripheral slope, the natural flow of water will be towards valley down below the plateau.

(32)

AJAY SHANKER

1

CHAPTER-7

Stacking of mineral rejects and disposal of waste

7.(a): Stacking of mineral rejects and disposal waste.

In general there is no any quantity of top soil will be generated only occasional cover is there which is negligible in quantum hence no stacking is required of top soil. However, about 435 M3_{will be generated ensuing period, it will be used for plantation only.}

Existing dump:

Present there are following OB dump in the lease area as given in the Table -12. Table -12: Over Burden dump in the lease area

DUMP

NO TYPE ACTIE/INACTIVE QUANTITY M3 BASE _{AREA M}2 (AV)Height REMARK

D1 ACTIVE 73269 24423 3m

TOTAL --- 73269 24423 3m

7.(b): RATE OF YEARLY GENERATION OF WASTE AND PROPOSALS FOR DISPOSAL OF WASTE NEXT FIVE YEARS(INCICATE SEQUENCEO FDUMPING WITH NECESSARY PLAN AND SECTON):

(1). Top soil will be generated only occasional cover is there which is negligible in quantum hence no stacking is required of top soil. However, about 435 M3_{will be} generated ensuing period,

(2). After sorting out waste mica within the quarry, the generated waste will consist of schist. This waste as it is does not support any plant growth. The year wise waste generation during next five years programme is given in the Table -13.

Table -13: YEAR WISE WASTE GENERATION

PERIOD QUANTITY (m3)

Year SOIL WASTE 98.5% SUB GRADE REJECTS

2013-14 435 25284 Nil- -

2014-15 Nil- 25668 Nil-- -

2015-16 Nil- 25416 Nil-- -

2016-2017 Nil 31716 Nil-

2017-2018 Nil 31716 Nil-

(33)

AJAY SHANKER

2 7.(c): LAND CHOSEN FOR DISPOSAL OF WASTE WITH PROPOSED JUSTIFICATION & MANNER OF DISPOSAL, CONFIGURATION AND SEQUENCE OF BUILD OF DUMPS:

(1). The location of waste dump is shown in plate no.6 and the area is select after considering the alternative location on the following points:-

(a).The area having minimum of forest growth.

(b): The area very close to the quarry requiring minimum trimming for its removal. (c):The dumping site against natural erosion.

(d): Dumps matching the surroundings and not creating visual intrusion. (2): Maximum height and speed of dump:

The location which is selected for dumping mine waste is a rolling ground having maximum elevation of 106-m and lowest being 103m. The dump surface will be made flat in level with the shaft collar elevation. To start with, the waste will be dumped towards— south and west making a level ground and then dumping will proceed towards the south side filling up the low lying areas near the quarry. The maximum quantity of waste which will be generated during first five years will be 139800m3. The average height which will be available for dump up to 118m R.L. will be 3m. Thus the spread will be about 27087 sq.m. Opencast mining will be continued up to end of pit limit than mining will be continued in the same massive pegmatite & mica schist vein through the underground method in future. Therefore, this waste will be utilized at the stage of stopping of the mine. The generated waste will be dumped for time being to future use in the stopping purposes. Year-wise overburden (OB) and waste is given in the Table -14.

Table 14: Year-wise overburden (OB) and Waste

Year Location Quarry

waste (m3₎ Swelling _Factor Height of _{Dump (m)} Area of _{Dump (m}2₎ 1st year _{South from}

quarry 25284 1.2 3m 3512

2nd year _-do- ₂₅₆₆₈ _1.2 _3m ₃₆₁₁

3rd year _SW ₂₅₄₁₆ _1.2 _3m ₃₅₃₀

4th year _-do- ₃₁₇₁₆ _1.2 _3m ₄₄₀₅

5th year _{West from}

the quarry 31716 1.2 3m 4405

Total ₁₃₉₈₀₀ ₁₉₄₆₃

(34)

AJAY SHANKER

3 The area has been selected for dumping yard in the south and west side of the lease area. Maximum Height and Spread of waste Dumps.

Volume of waste likely to be generated = 139800 m3 Average height of the dump proposed = 3 m Surface area for dumping of waste is 19463m2/ 1.9463ha

Old dumps will be managed through plantation, shrubs and Construction of Parapet wall. A forestation also will be taken up all around the old waste dumps by arranging the soil. 7.(e): QUANTITY & GRADE OF SUBGRADE MATERIAL

Mineral reject: No mineral rejects likely to be generated. Sub grade: No sub-grade mica likely to be generated