Sampling Sand and Gravel Deposits for Backfill at Hollinger

CIM Bulletin1944
THE sand and gravel used for backfilling at the Hollinger mine is obtained from deposits in a low range of hills some three miles north of the mine, where the Company owns a number of claims. The material is transported to the mine by aerial tram.
Keywords: Gravel, gravel, percolation, samples, sand, systematic sampling, Mine, Mines, Percolation rate, Pipe, Sampling, Sand, Water, Waters
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