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6.4.4 EXHIBIT D -MINING PLAN <br />Nature of the Deposit <br />The overburden occurs at a thickness from 4-12 ft and is composed of sand silt <br />{ML) silty sand {SM) and some sandy and silty clay (CL). Sand and Gravel <br />occurs at a thickness of 10-15 ft. Directly beneath the sand and gravel is a <br />weathered zone of shale occurring at a thickness of 3-6 ft under which is the un- <br />weathered Pierre shale. <br />Commodities <br />The primary commodity is sand and gravel to be used for the construction <br />industry. The are no incidental commodities. <br />Explosives <br />No explosives will be used for the mining operation. <br />Gardels Pit Rev AR-1.0 <br />Regular 112 Permit Application <br />