annexure i site location map of smt. r. e. neeraja...
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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
R. E. Neeraja Lakshmi Annexure of Form-1
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Quarry Lease boundary map of Smt. R. E. Neeraja Lakshmi quarry lease
R. E. Neeraja Lakshmi Annexure of Form-1
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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
R. E. Neeraja Lakshmi Annexure of Form-1
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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
2622 m3 of granite waste will generate.
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
2622 m3 of granite waste will generate.
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.