4 Terms
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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
Pencil mark
Mining; General mining
(Australia) A thin bed of dark slate, about the thickness of the lead of a carpenter's pencil, that is parallel to the indicator.
Deep sinker
Mining; General mining
(Australia) A tall drinking glass; also the drink it contains, so called in fanciful allusion to the shaft of a mine.
Billy
Mining; General mining
(Australia) A name used in the Clermont district of Queensland for a bed of quartzite that caps the coal measures.
Cross gateway
Mining; General mining
(Australia) A road, through the goaf, that branches from the main gateway.
Block claim
Mining; General mining
(Australia) A square mining claim whose boundaries are marked out by posts.
Hot-metal mixer
Mining; General mining
A large holding furnace for molten pig iron. The capacity of these furnaces, which are of the tilting type, is up to 1,400 st (1,270 t). Hot metal mixers may be active (that is, the pig iron is ...
