Screening Sand And Gravel Handbook Pdf

20013133its and quarries as defined in the gazette pit means an excavation that is open to the air and that is operated for the purpose of extracting sand, clay, marl, earth, shale, gravel, stone or other rock but not coal, a coalbearing substance, oil sands, or oil sandsbearing substance or an ammonite shell and includes any associated infrastructure, but does not include a quarry.

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