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| Waste |
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Rock or mineralized material that is too low in grade to be mined and milled at a profit.
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| White damp |
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Carbon monoxide gas almost always found in the after damp following an explosion of coal dust or fire damp in a mine. Extremely poisonous, lighter than air, colorless, odorless and tasteless.
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| Wobble plate |
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A rotating canted plate in an axial type piston pump which pushes the pistons into their bores as it "wobbles".
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| Work |
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The application of force over a definite distance. Work (W) = Force (F) x distance (s). Expressed in joules, ergs, and foot-pounds. The joule is exactly the amount of work done in exerting the basic metric unit of force, 1 newton, over the basic metric unit of distance, 1 metre.
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