Open-pit mining - WikipediaNote the size of the excavators for scale (foreground, left), and that the bottom of the mine is not visible. Open-pit, open-cast or open cut mining is a surface mining technique of extracting rock or.ore manganes small scae open pit,What is mining? - Rainforest Information for Kids - MongabayManganese, tantalum, cassiterite, copper, tin, nickel, bauxite (aluminum ore), iron ore, . Small scale mining is equally devastating to the environment, if not more. . while mine tailings flow into either an abandoned mining pit or adjacent forest. . Malaria and other water-born diseases increase significantly whenever open.
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