9 Step Process For Discovering Mining & Refining Gold
Jul 10, 2021 Ore Mining and Dressing Effluent Guidelines. EPA promulgated the Ore Mining and Dressing Effluent Guidelines and Standards ( 40 CFR Part 440) in 1975, and amended the regulation in 1978, 1979, 1982 and 1988. The regulation covers wastewater discharges from ore mines and processing operations.
Description. This industry group comprises establishments primarily engaged in developing mine sites or mining metallic minerals, and establishments primarily engaged in ore dressing and beneficiating (i.e., preparing) operations, such as crushing, grinding, washing, drying, sintering, concentrating, calcining, and leaching.