Mineral mining

Mineral mining

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

Industry: Mining

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Mineral mining

tool extractor

Mining; General mining

An implement for grasping and withdrawing drilling tools when broken, detached, or lost in a borehole. A fishing tool.

tool grab

Mining; General mining

An implement for grasping and withdrawing drilling tools when broken, detached, or lost in a borehole. A fishing tool.

loosening bar

Mining; General mining

An implement for loosening a pattern from a sand mold.

An important component of stranded ropes is the core, which may be either of fiber or of wire. In winding ropes it is generally made of manilla, sisal, or hemp. The function of the core is to support ...

diamond ballas

Mining; General mining

An important industrial variety of diamond. The stones are spherical masses of minute diamond crystals arranged more or less radially. They have no well-defined cleavage planes and thus have great ...