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 device, operated by an electric current, and causing by its operation abrupt changes in an electrical circuit (making or breaking the circuit, changing of the circuit connections, or variation in ...

Automatic belt takeup

Mining; General mining

A device used with certain types of belt conveyors for the taking up or storage of belt during reversible operation.

Tiger

Mining; General mining

A device, as a fork, for supporting a continuous series of well-boring rods or tubes while raising or lowering them in the hole.

Interrupter

Mining; General mining

A device, usually automatic, for rapidly and frequently breaking and making an electric circuit, as in an induction coil.

Lava dome

Mining; General mining

A dome-shaped mountain of solidified lava in the form of many individual flows, formed by the extrusion of highly fluid lava, e.g., Mauna Loa, HI.

Separation door

Mining; General mining

A door erected in a roadway to prevent the passage of air. When doors are erected between an intake and a return airway, they may be known as separation doors.

Air door

Mining; General mining

A door erected in a roadway to prevent the passage of air. When doors are erected between an intake and a return airway, they may be known as separation doors.