RAJASHREE LIMESTONE MINE
|Name of the Organization||Rajashree Cement Unit of Grasim Industries Ltd|
|Name of the Mine||Rajashree Cement Limestone Mine|
|Contact Address||Rajashree Cement, Adityanagar, Malkhed Road-585292, Dist.Gulbarga, Karnataka,|
|Mines Capacity||6 Million Tons per annum|
RAJASHREE Cement Limestone Mine located at Adityanagar in Gulbarga District of North Karnataka, is one of the largest single location captive limestone Mine in the Country, producing around 6 million tonnes of limestone & 0.50 million tonnes of overburden per year. It is a well planned opencast mine using latest art of technology in its working. Limestone deposit belongs to middle Bhima- series & is free from any metamorphism. Extent of Mining Lease is 1813.28 acres, having reserves which is sufficient for 25 years at the existing rate of c6nsumption. Average Quality of Lime stone is 45%-48% lime (CaO) & 11%-15% Silica (SiO2). A fully mechanised quarry employing 6 m3 bucket capacity excavators, 60 T Dumpers & 150 mm dia. Master Drills, has been developed by ‘Opencast’ method having a overburden bench of 1 to 2 metres & 6 limestone benches each of 9 to 10 metres height. The ROM from different benches with predetermined blending ratio is fed to 2 nos. of In-pit crushers having 1200 TPH capacity. Mine is managed by bare minimum No. of employees & having average Output per Man Shift (175 T) which is considered to be the best in Mining Industry as a whole. Water storage reservoirs of 3 lac m 3 have been created in Mines & entire water requirement for plant, power plant & colony is met with this in the peak summer period. Intensive afforestation has been done in & around mining area. Garden, fruit arcades have been developed in mine pits conserving a part of soil.
Mine has made road side sprinklers, in built wet drilling arrangement in drill rigs, high pressure water , tanker for muckpile wetting, jet spray with chemicals at crusher hopper & use mobile water tankers to make mine atmosphere absolutely dust free. Conducting blasting with Sequential blasting machine with Non Electric Initiation, low density explosives & vibration monitoring machine to abate vibration / noise nuisance. Periodical environmental monitoring surveys w.r.t. to water quality, airborne dust, noise & vibration levels etc., are conducted.