leaching control
21Tailings — A panorama of Broken Hill, New South Wales, backed by the man made mullock (waste tailings) heaps from the Line of Lode mine (the mullock heaps are the hills that stretch across this image). Tailings, also called mine dumps, slimes, tails, leach… …
22Sand-based athletic fields — are sporting grounds constructed on sand, which have certain advantages over those built on native soils. Highly maintained areas of turf, such as those on an athletic field or on golf greens and tees, can be grown in native soil or sand based… …
23Mopani Copper Mine — Mopani Copper Mines Plc Type Public Company Industry Mining, Materials Founded N/A Headquarters Kitwe, Zambia Key people Emmanuel B Mutati, CEO …
24environment — environmental, adj. environmentally, adv. /en vuy reuhn meuhnt, vuy euhrn /, n. 1. the aggregate of surrounding things, conditions, or influences; surroundings; milieu. 2. Ecol. the air, water, minerals, organisms, and all other external factors… …
25Business and Industry Review — ▪ 1999 Introduction Overview Annual Average Rates of Growth of Manufacturing Output, 1980 97, Table Pattern of Output, 1994 97, Table Index Numbers of Production, Employment, and Productivity in Manufacturing Industries, Table (For Annual… …
26Brass — For other uses, see Brass (disambiguation). Brass die, along with zinc and copper samples. Brass is an alloy of copper and zinc; the proportions of zinc and copper can be varied to create a range of brasses with varying properties.[1] In …
27Australia — /aw strayl yeuh/, n. 1. a continent SE of Asia, between the Indian and the Pacific oceans. 18,438,824; 2,948,366 sq. mi. (7,636,270 sq. km). 2. Commonwealth of, a member of the Commonwealth of Nations, consisting of the federated states and… …
28mining — /muy ning/, n. 1. the act, process, or industry of extracting ores, coal, etc., from mines. 2. the laying of explosive mines. [1250 1300; ME: undermining (walls in an attack); see MINE2, ING1] * * * I Excavation of materials from the Earth s… …
29Chemical plant — BASF Chemical Plant Portsmouth Site in the West Norfolk area of Portsmouth, Virginia, United States. The plant is served by the Commonwealth Railway …
30Ghana — Ghanaian, Ghanian /gah nee euhn, gan ee /, n., adj. /gah neuh, gan euh/, n. 1. a republic in West Africa comprising the former colonies of the Gold Coast and Ashanti, the protectorate of the Northern Territories, and the U.N. trusteeship of… …
