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A large stope in the Treadwell gold mine, Alaska 1908; an example of shrinkage stoping. Shrinkage stoping is most suitable for steeply dipping ore bodies (70°—90°). In shrinkage stoping, mining proceeds from the bottom upwards, in horizontal slices (similar to cut and fill mining), with the broken ore being left in place for miners to work ...
Freiburg Miner wearing a Mooskappe, stained glass window, 1330. A miner is a person who extracts ore, coal, chalk, clay, or other minerals from the earth through mining. There are two senses in which the term is used. In its narrowest sense, a miner is someone who works at the rock face; cutting, blasting, or otherwise working and removing the ...
Door for directing ventilation in an old lead mine. The ore hopper at the front is not part of the ventilation. One of the most important aspects of underground hard rock mining is ventilation. Ventilation is the primary method of clearing hazardous gases and/or dust which are created from drilling and blasting activity (e.g., silica dust, NOx ...
A drum hoist (steel wire rope visible) and motor. In underground mining a hoist or winder [1] is used to raise and lower conveyances within the mine shaft.Modern hoists are normally powered using electric motors, historically with direct current drives utilizing Ward Leonard control machines and later solid-state converters (), although modern large hoists use alternating current drives that ...
24 December 2010: Paul Torre (39), killed while carrying out maintenance on a haul truck, at the Cloud Break mine in the Pilbara, an iron ore mine operated by the Fortescue Metals Group. [45] [46] [47] 5 August 2010: Rene Ponce (60), miner at the Norseman Gold Mine in the Eastern Goldfields fell while removing ladders in an escape rise. [48] [49]
The working hours of the hewers varied from region to region and ranged between 10–12 hours, but the time taking entering and leaving the mine was not counted. For one week of hired work in 1617 a hewer was paid just 18 Mariengroschen. This week's wages would not even buy a pound of butter at that time.
A sough is a drainage tunnel to take water from coal mines without the need to pump it to the surface. [1] An example is the Great Haigh Sough. Spoil tip. Gin Pit Colliery's old spoil tip or rucks A spoil tip is a pile built of accumulated spoil - the overburden or other waste rock removed during coal and ore mining. Squeeze
Copper-sulfide-loaded air bubbles on a Jameson Cell at the flotation plant of the Prominent Hill mine in South Australia. The Jameson Cell is a high-intensity froth flotation cell that was invented by Laureate Professor Graeme Jameson of the University of Newcastle (Australia) and developed in conjunction with Mount Isa Mines Limited ("MIM", a subsidiary of MIM Holdings Limited and now part of ...