coal mine blasting design

Explosives and blasting in underground coal mining

Mar 16, 2015 · PRINCIPLES OF BLASTING IN COAL Underground coal mining operations could be divided into two categories , namely, Development and Depillaring. Both for bord -and-pillar as well as for longwall mining, driving galleries through coal seams are done. there are two techniques employed for blasting in development galleries. =>Blasting on pre-cut face ...

Blasting for Mine to Mill Optimisation

The management of fines in blasting and crushing for a copper heap leach operation The control of blast damage, mining recovery and dilution in open cut coal operations The optimisation of mine fragmentation to increase mill throughput in gold and copper operations.

Blasting in Mines - superpartha

Explosives Blasting in Mines: The only way to get coal or any ore or mineral out of the ground is to dig it out. Digging means drilling and blasting. Therefore, every mines, whether underground or opencast (surface) mines, drilling blasting activities are one of most important.

PDF Citizen's Guide to Blasting - West Virginia Department ...

obtaining names and phone numbers of the mine operators. Cast blasting Cast blasting is a type of blast design, that utilizes the explosive energy to move overburden material (rock that covers the coal seam) across the mining pit. Alt-hough cast blasting requires more pounds of explosive for each cubic yard of rock

Automated Coal Seam Identification Improves Drilling and ...

3/31/2020 · Improved Coal Control. By significantly improving material fragmentation and accurately identifying coal seams, stratification can also reduce coal loss or dilution. Improved Safety. Since stratification can improve blasting performance and blast-loading design, it can significantly reduce the amount of fly rock produced by explosives.

Regulations | Mine Safety and Health Administration (MSHA)

MSHA is responsible for enforcing the Federal Mine Safety and Health Act of 1977 (Mine Act) as amended by the MINER Act of 2006. The Mine Act gives the Secretary of Labor authority to develop, promulgate, and revise health or safety standards for the protection of life and prevention of injuries in the nation’s mines.

Blasting - Wyoming Department of Environmental Quality

Additional Blasting Resources. OSMRE Blasting Design Rules of Thumb. Office of Surface Mining Reclamation and Enforcement (OSMRE) Blasting Website. OSMRE Blaster's Training Modules. Contact Information. Reo Barney, PE Blasting Program Manager, Department of Environmental Quality, Land Quality Division, 2100 West 5th Street, Sheridan, WY 82801 ...

H BLASTING IN SURFACE EXCAVATION

Secondary blasting can be done by pop shooting (blockholing) and plaster shooting (mudcapping). Shaped charges are sometime used in secondary blasting, but this is much more expensive. Cast Blasting When overburden is removed from a coal or mineral deposit it is generally cast to a waste dump by draglines, or removed by loaders and trucks.

Surface Coal Mining Methods in Australia - IntechOpen

Fig. 3. Overall mining sequence of a typical surface coal mine in Australia (after Westcott et al., 2009). 2.1 Dragline method Dragline is the predominant mach ine which is used to remove the overburden and expose the coal when the deposit s characteristics match the draglines physical capabilities. Once

290+ Coal Mining ideas in 2021 | coal mining, coal, coal miners

Economy. 19th century. Mining. Coal mine with several floors. Engraving. "The Art of the Illustration", 1888. File name: 06_10_017140 Title: Coal mining, Anthracite Region, Pennsylvania. A miner testing the roof, following a blast Created/Published: The Mebane Greeting Card Co., Wilkes-Barre, PA.