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Mining |
Record 101 to 112 of 112 |
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Revolving Squeezer "Brown's revolving squeezer, the ball being made to pass between two rotating cams which flatten it out, and subsequently between the second of these and a third which carries the operation further; i... |
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Shaft lining "Until hard rock is reached the sides of the excavation are supported temporarily by a lining"—Finley, 1917... |
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Shaft lining "Until hard rock is reached the sides of the excavation are supported temporarily by a lining"—Finley, 1917... |
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Shaft wall Shaft wall from mining. ... |
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Sluice "One of the simplest forms of sluice as used in river diggings in the north-west of America. A rectangular trough of boards, whose dimensions depend chiefly on the size of the planks available, is set... |
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Stamp Mill Stamp Mill.... |
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Train, Coal An illustration of mine train carts loaded with coal.... |
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Trepan, large A trepan used for boring large shafts.... |
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Trepan, small A trepan used for boring small shafts. ... |
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Two-high Trains "Two kinds of successions of grooves used for rectangular bars in "two-high" train." — The Encyclopedia Britannica, 1893... |
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Washing Men are breaking up the rocks with water so they can get to the silver or gold among the rocks.... |
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Wells, Oil An oil well is a general term for any boring through the Earth's surface designed to find and produce petroleum oil hydrocarbons. Usually some natural gas is produced along with the oil, and a well de... |
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