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a. A depression in a coal seam, mine floor, or roof. AGI
b. A depression produced by downwarping of beds on the downthrown side of
a fault such that they dip toward the fault. AGI
c. The difference between the sagging path a conveyor belt actually takes
due to the imposed load of material and its own weight, and the
theoretical plane tangent to the top of the supporting idler rolls.
d. See also: rod sag
Source:
Dictionary of Mining, Mineral, and Related Terms
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