metal ore mining and dressing
2020 11 13 G. Metal Mining Ore Mining and Dressing 1. Authorized Stormwater Discharges. The requirements in Sector G apply to stormwater discharges associated with industrial
Ore Mining and Dressing Effluent Guidelines
2021 7 10 Wastewater is also produced during the ore milling and beneficiation processes e.g., chemical leaching, and from contaminated stormwater at storage facilities. These activities are included within NAICS code 2122, metal