Operating hydraulic mining elevator and impounding works at North Bloomfield Mine, entered as respondent's exhibit 43, in the matter of Equity Case 7865, United States v. North Bloomfield Gravel Mining Company. This elevator raises the water used in mining and the sand, gravel, and other debris from 40 to 150 feet in height, and deposits it in vast impounding reservoirs, more than 300 feet in depth.

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