Mineral mining

Mineral mining

The extraction of valuable minerals or other geological materials from the earth for economic interests.

Industry: Mining

Contributors in Mineral mining

Mineral mining

A continuous miner, developed in the United States, for driving headings in medium or thick coal seams. It weighs about 26 st (23.6 t), and makes a cut 8-1/2 ft (2.6 m) wide, gathers the cut coal and ...

Dc (direct chill) casting

Mining; General mining

A continuous method of making ingots or billets for sheet or extrusion by pouring the metal into a short mold. The base of the mould is a platform that is gradually lowered while the metal ...

Electric ingot process

Mining; General mining

A continuous method of melting and casting metal with progressive solidification. The molten metal is completely protected from the atmosphere. There is minimum segregation, and as no refractory ...

Goodman-type 500 miner

Mining; General mining

A continuous miner designed for driving coal headings in medium to thick seams. The machine is crawler-mounted and equipped with two triple-arm rotating cutting units and 1383 a chain conveyor. The ...

Goodman miner

Mining; General mining

Joy walking miner

Mining; General mining

A continuous miner with a walking mechanism instead of crawler tracks. The walking mechanism was adopted to make the machine suitable for thin seams. The lowest crawler-track-mounted machine can ...

Walking miner

Mining; General mining

A continuous miner with a walking mechanism instead of crawler tracks. The walking mechanism was adopted to make the machine suitable for thin seams. The lowest crawler-track-mounted machine can ...