Method of Mining Clause Samples
Method of Mining. The method of mining is opencast semi mechanized. In general blasting is not required in sand stone mine. Blasting will require to remove of overburden and side burden. Controlled blasting is propoed by adopting all the safgety measures as per Mines Act and with the permission of DGMS. Thus drilling & blasting operation are needed to win this mineral deposit. This is carried out by the experienced & authorized contractors on contractual basis. Drilling is being done by hand held ▇▇▇▇ ▇▇▇▇▇▇ of 32 mm size of shot hole. Drilling parameters are 1. Diameter of shot holes- 32 mm, Spacing – 1 m, Burden- 0.8 m. Type of explosive- Slurry Explosive AN base, ANFO and Electric detonator. Total 18 holes area proposed for one blasting round. Charge per hole is proposed 500gms of ANFO and one cartridge of slurry explosive around 125gms. One detonator is proposed for one hole. Blasting will need in hard strata. Secondary Blasting is not needed. The loading of Sand Stone in dumpers as by hydraulic excavator loaders & then further loaded for its onward transportation by truck to the Karauli & other parts of the state. Approach roads are available up to the bottom of the mine. The bench height is proposed 6 meters. Width is also proposed 6.0meter. Ultimate pit slope is proposed 45°. Following machineries will be used for mining of Sandstone: 1 Hydraulic Excavator Loader JCB or L&T Two 2 Air compressor tractor mounted Wheel Mounted 120CFM Two 4 Drill Roads 32mm bit As required 5 Water Tanker trolley mounted 4000Litres One 6 Tractor Trolley 4 Tonne Capacity Four 7 Other Tools As required As required
Method of Mining. Mining will be done open cast semi mechanized method. The mining is proposed for Lime stone. The Mining of Lime Stone mineral will be carried out as per approved mining plan. Lime Stone is exposed, a free face in strike direction along weak zone of strata is opened out by digging a trench box. Thus a bench is formed. Controlled Blasting is required. The lessee also have explosive magazine license No.10036 valid till 31-03-2023. (copy enclose) The mineral is proposed to transport by tractor and Dumper. Following machineries will be used for mining of Lime Stone (ROM): Table 1.2 Showing Details of machinery proposed to be used at mine 1 Jack Hammers 10 Atlas Copco 32mm 3 D.G.Set 2 Local 15+40 KVA 5 Dumper 5 ▇▇▇▇▇ ▇▇▇▇▇▇▇ 180 HP 7 Wagon drill m/c 1 Atlas copco 4 inch Dia 9 Crane 2 Local 10 Wheel Loader 1 Sdlg 3 Ton 11 Backhoe Loader 1 JCB Inclusion of proposed crusher plant capacity is 2000 TPD. Crusher plant used for crushing of lime stone, OB waste stone is crushed in stone crusher to make stone grit for construction industry.
Method of Mining. The mine is fully equipped with modern machineries and equipments for mining and overburden handling, mining operations are being carried out by opencast semi-mechanized method. Topsoil of 0.5 – 3.0 m is scraped through excavator and stacked at designated sites. Below the cover of top soil there are layers of murram and hard rock of weathered sandstone having thickness of 1.0 m to 3.0 m. below this lies massive sandstone varying in thickness from 4.0m to 20.0 m which is removed by blasting. Overburden is handled by excavator - dumper combination. The productive, around 1.0 to 10.0m, zone is exposed by excavating overburden. Mining of sandstone starts with separating the layer from natural bondage by chisel and hammering along cleavage plane / weaker zone. The stone layer breaks non-dimensionally depending upon free face available. It is then sized to possible dimension by chisel and hammer. Line drilling of hole is also used to split massive sandstone blocks. Finally, it is splitted along the natural split planes to yield single solid slab of desired thickness ready to use. Mineral will be transported to the processing plant. It will be cut into sizes as per market demand and packed. This is then transported outside by the end user’s.
7.1 Proposed year wise development for two years
Method of Mining. A haul road of gradient maintained 1 in 16 as per MMR 1961 is exists in the mine. Approach roads are provided upto the working pit for movements of laborers and vehicles. Hydraulic dumpers and tippers will be deployed for transportation of mineral form working to consumers. It is an existing mining lease of Marble and presently mining is being done adopting opencast method. The Marble horizons are being of soft, compact formation hence drilling & blasting is not required during mining. The excavated Marble horizon will be broken & sorted at the face manually. The Marble will be dispatched to the purchaser. Whereas ultimate pit slope is proposed 45°. Following machineries will be used for mining of Marble:
1 Hydraulic Excavator 0.3 or 1.00 cu. 1 4 Tippers 8 T 1 5 Diamond Wire Saw or Chain saw - As Needed 3 Hydraulic Jack - As Needed