The extraction of minerals using acid solutions applied to metallic ores that have been removed from their original location and heaped or dumped in a new location.
ADWR Dictionary
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Heap and Dump Leaching
Housing Unit
A group of rooms or a single room occupied as separate living quarters. Housing unit includes a single family home, a patio home, a townhouse, a condominium, an apartment, a permanently set-up mobile home or a unit in a multifamily complex. Housing unit does not include a mobile home in an overnight or limited-stay mobile home park or a unit in a campground, motel, hotel or other temporary lodging facility. A housing unit may be occupied by a family, a family and unrelated persons living together, two or more unrelated persons living together, or by one person.
Hydrograph
A graphic representation of the changes in the flow of water or the elevation of water levels over time