LandOfFree - US Patents - Listing for Mining or in situ disintegration of hard material,Processes

Mining or in situ disintegration of hard material – Processes – Stabilizing underground structure

Continuous roof support system for tunnel boring

Mining or in situ disintegration of hard material – Processes – Forming blocks

Continuous shoring machines for tunnel construction

Mining or in situ disintegration of hard material – Processes – Forming blocks

Continuous tunnel boring machine and method

Mining or in situ disintegration of hard material – Processes – Stabilizing underground structure

Contour miner

Mining or in situ disintegration of hard material – Processes – Stabilizing underground structure

Control of subsidence during underground gasification of coal

Mining or in situ disintegration of hard material – Processes – Breaking down by direct contact with fluid

Controlled cavitation erosion process and system

Mining or in situ disintegration of hard material – Processes – Breaking down by direct contact with fluid

Controlled foam injection method and means for fragmentation of

Mining or in situ disintegration of hard material – Processes – Breaking down by direct contact with fluid

Controlled foam injection method and means for fragmentation...

Mining or in situ disintegration of hard material – Processes – Explosive

Controlled fracture method and apparatus for breaking hard compa

Mining or in situ disintegration of hard material – Processes – Directly applying heat or vibration

Crushing apparatus electrode and crushing apparatus

Mining or in situ disintegration of hard material – Processes

Crushing method using large boreholes in underwater rock

Mining or in situ disintegration of hard material – Processes

Cutter and method to remove surface coatings

Mining or in situ disintegration of hard material – Processes – Breaking down by direct contact with fluid

Cutters and methods of cutting

Mining or in situ disintegration of hard material – Processes – With material-handling

Cutting and chiseling assembly for mining machine and method per

Mining or in situ disintegration of hard material – Processes – Breaking down by direct contact with fluid

Cutting heads for horizontal remote mining system