Method for hydraulically mining unconsolidated subterranean mine

Method for introducing and blowing rock dust and device for...

Method for longwall mining with side-by-side arch sections

Method for opening mineral deposit and subsequent mining thereof

Method for producing chambered blast holes

Method for production of gas from a coal seam using...

Method for reclaiming highwalls at mining sites with partially m

Method for reducing compressed air losses when driving undergrou

Method for removing hard rock and concrete by the combination us

Method for working steeply dipping vein ores with vertically dow

Method of an apparatus for gaining access to an underground cham

Method of and a device for carrying out wire bolting

Method of and apparatus for breaking rock

Method of and apparatus for breaking rock

Method of and apparatus for disaggregating particulate matter

Method of and apparatus for the mining of coal

Method of and arrangement for loosening, loading and transportin

Method of blasting rock caverns with large cross-sectional area

Method of borehole hydraulicking of soluble minerals

Method of breaking a full face of rock for constructing shafts a