Cracks developing from the upper or tension side of a stratum caused by bending moment over a coal seam. Such breaks are induced in the nether roof in consequence of the moment exercised by the weight of the roof-stratum overhanging the face, cantilever fashion. The weight break differs from a shear plane in the more ragged and uneven character of the fracture and in hanging over the waste instead of over the unmined coal seam. Also called first break. Briggs
Source:
Dictionary of Mining, Mineral, and Related Terms












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