Method of and an arrangement for longwall mining

Method of and apparatus for collecting peat from peat field

Method of and apparatus for cutting peat

Method of and apparatus for horizontally and vertically...

Method of and apparatus for hydraulic mining

Method of barge mining tar sands

Method of controlling long term safety of underground entry...

Method of controlling the working motion of a cutting tool...

Method of cracking rock material, and breaking device

Method of cutting and cutting rotative bit

Method of exploitation of a nodule deposit on a sea floor...

Method of exposing minerals in open-cut mining

Method of extracting coal

Method of extraction of nodular sediments or the like from...

Method of forming carbon dioxide mixtures miscible with...

Method of fracturing rock or similar material

Method of hydraulically mining underground materials

Method of mining

Method of mining and separating coal in substantially...

Method of mining bedded mineral deposits with hydraulic...