Process and apparatus for fragmenting rock and like material usi

Process and device for milling off traffic areas

Process and system for the solution mining of evaporites and pre

Process for controlling longwall shearing and heading machines a

Process for controlling the movement of a universally swivellabl

Process for controlling the movement of an universally swivellab

Process for demolishing a bridge structure

Process for disposal of sulfate containing brines from diaphragm

Process for dry mining phosphate ore utilizing a supersonic gas

Process for effecting even retort working fluid flow throughout

Process for excavating a cavity in a thin salt layer

Process for forming an in situ oil shale retort

Process for heating and chemically treating an aqueous process f

Process for hollowing out a cavity formed of a plurality of sub-

Process for hydraulically mining coal

Process for hydraulically mining coal employing a cutting monito

Process for in situ conversion of coal or the like into oil and

Process for in-situ leaching of uranium

Process for inerting a coal mining site

Process for making general use of the earth's heat and obtaining