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

Nodular cast iron

Mining; General mining

A cast iron that has been treated while molten with a master alloy containing an element, such as magnesium or cerium, to produce primary graphite in the spherulitic form.

Stuffing box

Mining; General mining

A chamber designed to contain packing and to maintain a fluid-tight joint about a piston rod where it enters a cylinder or around a drill rod where it enters the casing at the collar of a borehole.

Joint box

Mining; General mining

A cast iron box surrounding an electric cable joint, often filled with insulation after the joint between cables has been made.

Grey cast iron

Mining; General mining

A cast iron that gives a grey fracture due to the presence of flake graphite; often called grey iron.

Washover shoe

Mining; General mining

A casing shoelike bit used to drill downward around a piece of drilling equipment stuck in a borehole.

Durville process

Mining; General mining

A casting process that involves rigid attachment of the mould in an inverted position above the crucible. The melt is poured by tilting the entire assembly, causing the metal to flow along a ...

Retrieving ring

Mining; General mining

A catch ring on a retractable wedge that engages a lifting device on the deflection barrel or bit, enabling the drill runner to remove a deflecting wedge from a borehole after deflection has been ...