ENS 111 Lecture Notes - Lecture 11: Placer Mining, Mountaintop Removal Mining, Open-Pit Mining

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Outflow of acidic water from metal/coal mines. Made of iron; solid in inner core; molten in outer core. Encourages people & companies to prospect for minerals on federally owned land by allowing any us citizen or company to stake claim on any plot of public land open to mining. Deals with earth"s physical structure & substance, its history, and processes that act on it. Downslope movement of soil & rock due to gravity. Rock altering form bc heat or pressure. Any naturally occurring solid element/inorganic compound with a crystal structure, specific chemical composition, and distinct physical properties. Systematic removal of rock, soil, or other material for purpose of extracting minerals of economic interest. Several hundred vertical feet of mountaintop may be removed to allow recovery of entire seams of resource. Mineral/grouping of minerals from which we extract metals. Sift through material in modern/ancient riverbed deposits using running water to separate lightweight mud & gravel from bheavier minerals of value.

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