annexure i site location map of smt. r. e. neeraja...

R. E. Neeraja Lakshmi Annexure of Form-1

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ANNEXURE I

Site Location map of Smt. R. E. Neeraja Lakshmi quarry lease


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Quarry Lease boundary map of Smt. R. E. Neeraja Lakshmi quarry lease


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1.0 Introduction

Smt. R. E. Neeraja Lakshmi proposes to conduct semi mechanized open cast method

quarrying for Black granite extraction in an area of 1.25 ha in Survey No. 109, Agaveli

Village, Krishnagiri Mandal, Kurnool District, Andhra Pradesh. The Director of Mines and

Geology has granted quarry lease vide Proceeding Number. 2603/ R4-2/2006 dated

31.05.2006 for a period of 20 years. Mining Plan was approved vide letter No. 5141/MP-

KNL/2011 dated 31.05.2012. It is proposes to conduct semi mechanized open cast method

quarrying for Black granite production of 228 m3/annum. Capital proposed for quarrying is

Rs. 55 Lakhs.

2.0 Quarry Lease Area Location

Smt. R. E. Neeraja Lakshmi proposes to conduct semi mechanized open cast quarrying for

maximum granite production of 228 m3/Annum. The quarry lease area of 1.25 ha is located

at Survey No. 109, Agaveli Village, Krishnagiri Mandal, Kurnool District, Andhra Pradesh.

The quarry lease area falls in the Survey of India topo sheet no. 57 E/10 of Latitude

15°33'8.40"N and Longitude 77°44'27.00"E with an elevation of 427 m. The nearest village

Agaveli located at a distance of 2.3 km from the QL area in NE direction. The nearest town is

Dhone located at a distance of 21.2 kms in SE direction. Nearest Railway station is

Linganenidoddi at a distance of 17.4 kms in SW direction. Kotakonda– Yerukalacheruvu road

is passing at a distance of 22.1km in NE direction. The area is connected by BT road from

Sangala to Agaveli passing at adistance of 0.3km in East direction. Seasonal Nala Pedda

Vanka is flowing at a distance of 4.7 km in SE direction. Kappatralla Reserved Forest is at a

distance of 5.4 km in NW direction. There is no National/State boundary, national park,

wildlife/bird sanctuary and critically polluted areas within 10km radius from the quarry

lease area. Details of the mine lease area are presented in table A-1. The lease area is

bounded by following Geo Co- Ordinates

Boundary Point Latitude Longitude

1 15°33'10.44"N 77°44'26.72"E

2 15°33'7.79"N 77°44'31.80"E

3 15°33'5.99"N 77°44'30.63"E

4 15°33'8.41"N 77°44'25.18"E


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Table A-1 Details of the Lease area

State & District Mandal Village Sy. No./

Plot No.

Area in

hectares

Ownership of

occupancy

Andhra Pradesh

& Kurnool Krishnagiri Agaveli 109 1.25 Govt. Land

(Barren)

3.0 Exploration

a) Present Status:

There is one pit in N-E side of the Q.L. area. Prospecting operation takes place in this pits

area during the past two years. The pit dimensions are 20m length and 10m width with a

depth of 3 m. About 782.779 m3 of black granite was produced from 2006 to 2012.

b) Future Programme:

It is proposed to dig three trial pits to a size of 3m x 3m x 3m on Southern, Northern and

Western sides in the area as there is over burden and weathered granite. This exploration

pits will be taken up in second year after Quarry Lease grant. The trial pits are useful to

evaluate the quality and depth occurrence of marketable Black Granite.

4.0 Geological Reserves

Based on the prospecting work carried out and the present exposure of the

rock, the reserves of the area have been estimated by the following parameters.

We have taken 25m as Proved Zone and 3m as probable and possible zones.

In this area the recovery factor is taken only 8%.

Table A-2 Reserves Estimation

S. No Category Length (m) Width (m) Depth (m) Reserves @ 8 % (m3)

1 Proved 180 32 15 6912

2 Probable 180 32 3 1382

3 Possible 180 32 3 1382

9676

Average length of the Granite zone = 180 m

Average width of the Granite body = 32 m

Average depth of Granite in proved zone = 15m

Average depth of Granite in each zone of probable and possible = 3 m

Recovery of salable granite = 8%

Granite reserves in proved zone (180mx32mx15mx8%) = 6912 m3


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Granite reserves in probable zone (180mx32mx3mx8%) = 1382m3

Granite reserves in possible zone (180mx32mx3mx8%) = 1382 m3

Total Geological Reserves of the Granite = 9676 m3

Total Reserves of Granite dispatched = 783 m3

Net reserves( Geological Reserves-Dispatched (9676 m3-783 m

3) = 8893 m

3

5.0 Mineable reserves and life of the mine

Initially, the total quantity of mineable reserves is considered as (economic) marketable

reserves. In this way a total mineable reserves of 8893 m3 are available in this QL area. The

average production is proposed to obtain 228 m3 per year. At this rate of production, the

expected life of the mine is calculated as below.

Life of the quarry: Mineable reserves/annual production =8893/228 = 39 years.

6.0 Quarrying Method

Open Cast method of mining is carried out in this mine by manually and semi mechanization

by using compressor operated jack hammer drills, excavators and dumper etc.

Transportation will be made by trucks to dispatching points. Hydraulic excavator and

compressor jack hammers were used for cutting the rock. Close shed drilling of 0.2m was

adopted along the strike line and charged with low explosive to avoid feather cracks.

6.1 Removal/Excavation of O.B and other quarry waste

The North-Western side of the area is selected for dump yard for next five years. Step

dumping will be resorted. This material can be utilized to fill the pits after quarry operations

are over. When the dumps reach their optimum height suitable greenery will be grown on

these dumps to stabilize them.

6.2 Separation of Large Primary Blocks of Mother Rock by Pre-Splitting

The mining will be followed in the form of linear cut method. This involves losing of the

primary block from mother rock. Hence primary cutting will be done by line drilling method

where close spaced parallel holes along straight line will be made. Line drilling method is

used for separation of primary blocks.

1) Once the free face is developed in working place, the primary cut is taken up over a

maximum length of 10 mtrs with a width of 3mtrs and to a depth of 6 mtrs, depends

upon the joints availability. These dimensions are confirmed as for field studies. Primary


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block will be cut into secondary blocks by jackhammer drilling and wedge cutting and

this block will be dislodged from in-situe position by an excavator.

2) Line drilling method will be used for cutting the primary blocks which involve drilling and

blasting.

3) The holes are charged with low explosive cartridge like gunpowder and non-delay

detonators for smooth blasting.

4) The use of delay detonators causes fragmentation and cracks in rocks. The non-

detonating cords are inserted into the holes and the holes are stemmed with muck and

plugged at the mouth and fired.

5) Thus the block will separate from the mother rock, which is pulled off from the face with

cranes or shovels.

6.3 Sub Division of Large Primary Block Into Secondary Block

This will be done drilling close spaced holes (along a line) down to the depth and the

secondary block will be removed easily by just pulling it with the help of proclain. Close

spaced holes will be drilled to the half the length of the block on either side of it by using

wedges blocks can be separated.

7.0 Production of commercial blocks

After primary separation the rock mass will be carefully examined to avoid hair line cracks,

mineral segregations and veins etc., The dressing of the rough blocks will be made by

chipping the edges and geometrically equating the edges of the block at the dressing yard.

The rough blocks obtained after primary cut it will be dressed for obtained good geometric

shape of granite. Thus the commercial blocks are produced.

8.0 List of Machinery

a) Since it has been decided to undertake semi-mechanized mining operations, the below

mentioned mine machinery will be deployed.

i. Excavator – One (Bucket capacity: 1m3, Boom length: 7m, Model: Tata hitachi 200Lc)

ii. 300 CFM – AIR compressor –One

iii. Jack Hammers – 3 units

iv. 17 tones Tippers – 2 No’s

b) Minor Tools: Chisels, Crow bars, pick of axes spades and hammers of different sizes.


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9.0 Year wise Development and production for five years

There is a vertical and free face is available on Eastern and Southern side of the prospecting

pit. So the Eastern and Southern side of the prospecting pit area is selected to work for next

five years production. It is envisaged to produce maximum of 228 m3 of salable granite

blocks in each year. To raise this target production about 2850 m3 of rock mass has to be

mined. The site inspection reveals that the Western and Southern portion of the existing

prospecting pit is suitable for development during 5 years programme. Most of this area is

covered by the sheet rock from top to bottom of the pit.

1st year: During first year operations it is proposed to develop the prospecting pit on south

and western side by covering the existing face into two benches of 5m height each. The

workings will be carried out over a length of 30 m, width of 10m. The benches will be

oriented in North-South direction and obtained about 228 m3 of granite blocks and 2622m

3

of waste granite in this year.

2nd year: In second year, the production of granite blocks will be obtained by advancing the

Eastern side two benches of first year workings towards West to a distance of 10m without

changing the orientation of the benches. In this year about 228 m3 of granite blocks and

2622 m3 of granite waste will generate.

3rd year: In third year, the production of granite blocks will be obtained by advancing the

Western side two benches of second year workings towards West to a distance of 10m

without changing the orientation of the benches. In this year about 228 m3 of granite blocks

and 2622 m3 of granite waste will generate.

4th year: In fourth year, the production of granite blocks will be obtained by advancing the

western side two benches of third year workings towards west to a distance of 10m without

changing the orientation of the benches in this year about 228 m3 of granite blocks and


5th year: In fifth year, the production of granite blocks will be obtained by advancing the

western side two benches of fourth year workings towards west to a distance of 10m

without changing the orientation of the benches. In this year 228 m3 of granite blocks and


During the first five years operations a total rock mass of 14250 m3 will be excavated and

1140 m3 of granite blocks will be recoverable from this rock mass and remaining material of


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about 13110 m3 will go as mineral waste. Year wise production and waste generation

details are presented in table A-3.

Table A-3 Year wise Granite Production and Waste generation

Year Working

Areas m2

Bench

Height(m)

Volume

in m3

Recovery

Factor

Production, m3

Granite@8% Wastage@92%

I

Year

30 x 10 = 300 5 1500 0.08 120 1380

27 x 10 =270 5 1350 0.08 108 1242

2850 228 2622

II

Year

30 x 10 = 300 5 1500 0.08 120 1380

27 x 10 =270 5 1350 0.08 108 1242

2850 228 2622

III

Year

30 x 10 = 300 5 1500 0.08 120 1380

27 X 10 =270 5 1350 0.08 108 1242

2850 228 2622

IV

Year

30 x 10 = 300 5 1500 0.08 120 1380

27 x 10 =270 5 1350 0.08 108 1242

2850 228 2622

V

Year

30 x10 = 300 5 1500 0.08 120 1380

27 x 10 =270 5 1350 0.08 108 1242

2850 228 2622

Total 14250 1140 13110

Average 2850 228 2622

10.0 Employment

S. No Description Quantity

1 Mine Manager 1

2 Blaster cum Mate 1

3 Excavator operator 1

4 Compressor operator 1

5 Tipper operator 2

6 Drillers 2

7 Helpers 12

8 Cutters 2

9 Watchman 1

Total 23


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ANNEXURE II

Drilling and Blasting

Drilling and blasting plays vital role in determining the size and shape of rough blocks.

Drilling Pattern is important in developing a working face and also preparing the rough

blocks suitable for their use in appropriate processing units. There are no important places

in and around the area, blasting will be carried with precautionary measures.

Drilling Parameters

i. Drill holes diameter: 74/Pmm

ii. Depth and inclination of the blast holes: 3 meter in case of separation primary blocks

depending on the block size. Then the drill-hole will be vertical.

iii. Burden and Spacing: 1.5m X 3 m

iv. Stemming and charging of the blast hole: The blast hole will be charged with 100

grams of explosives and filled with clan pills subsequently; the shot hole will be

stemmed using brass stemming rods.

v. Explosive type: (1) Slurry based explosives or Gun Powder.

Broad Blasting parameter

Drill-Hole patterns for primary and secondary smooth blasting. Uniform single line

equidistant holes (line drilling) will be deployed for separation of blocks from mother rock.

In the case of sheet rock the primary drilling will be in the form of equidistant vertical holes

to take out blocks of Gang Saw.


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ANNEXURE - III

Water Requirement

Water requirement for the project is mainly for Domestic source, maintaining the green belt

and also for sprinkling on the haulage roads to mitigate dust emissions. The water shall be

drawn from nearby villages. The water requirement of the project is presented in Table A-4.

Table A-4 Water Requirement

S. No Water Usage Quantity KLD

1 Wet drilling operation (On production basis @ 100 Ltr/1 m3) 0.1

2

Water sprinkling on haul roads @ 1Ltr/Sq.Mt (1020 m2)+1/4

th

for waste dump 1.3

3 Domestic @ 45 Ltr/Head 23 No’s) 1.0

4 Green Belt @ 0.2 KL for 0.09 ha – 2 times a day 0.4

Total 2.8

The generation of wastewater from domestic sources is expected to be approximately 1.1

KLD, which will be sent to septic tank followed by soak pit.

Site Services

It is proposed to provide the site services like mine office and other statutory constructions

like rest shelter, first aid, work shed and drinking water as required at eastern boundary of

the quarry lease area. Drinking water will be supplied to the workers from the borewell

opened in the adjacent agricultural field or from nearby village.


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ANNEXURE – IV

Solid Wastes Generation and Management Plan

During five years operations a total rock mass of 14250 m3 will be excavated and 1140 m

3 of

granite blocks will be recoverable from this rock mass and remaining material of about

13110 m3 will go as waste mineral. The waste produced will be used for backfilling.

The waste produced will be used for backfilling. Solid waste generated year wise for first

five years plan as below Table A-5.

Table A-5 Solid waste generated year wise

S. No. Year Total waste generated m3

1 I Year 2622

2 II Year 2622

3 III Year 2622

4 IV Year 2622

5 V Year 2622

Total waste generated for five years 13110

Average 2622

Dump Area

During these five years, waste will be stocked in the NW side of the area over an area of 437

m2 to a height of 30 m. By the end of lease period about 0.096 ha of area will be used for

dumping of waste material. Step dumping will be resorted. This material can be utilized to

fill the pits after quarry operations are over. When the dumps reach their optimum height

suitable greenery will be grown on these dumps to stabilize them.

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