sand and gravel quarry definition m610b
11/95 sand and gravel processing 11.19.1-1 11.19.1 sand and gravel processing 11.19.1.1 process description1-6 deposits of sand and gravel, the unconsolidated granular materials resulting from the natural disintegration of rock or stone, are generally found in near-surface alluvial deposits and in subterranean and subaqueous beds.
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