ENV S 173 Lecture 10

ENV S 173 Lecture 10 - ENV S 173 Lecture The environmental impact of western mining Development focus Technological focus Inexhaustibility of

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ENV S 173 Lecture 10/16/09 The environmental impact of western mining Development focus Technological focus Inexhaustibility of resources Placer mining Flumes Hydraulic mining Slickens Malakoff Mine Lode mining Comstock Lode Chemical extraction 1800’s to develop the resources and make the US a big power. Goes back to puritans, cash crop farmers of Virginia, fur trappers and traders to west. Idea was to extract the resources. Technological changed happened fast due to the steam engine. Accelerated in 19 th century. Inexhaustibility of resources was the attitude of most of the people. There was no concern of scarcity because there was so much area to explore. They just moved onto new areas after they polluted or depleted the resources of one area. Mining became a major industry in the west. It was an extracted industry, they went to get the gold/coal/resources and then left and went back home, that was their attitude. Took the wealth of the area and gave nothing back, just left. Gold extraction accounted for 3 tons of dirt to get 1 ounce of gold. 420 pounds of gold equated to 36 million pounds of ore/dirt. California mining was mostly placer mining. Placer mining is mostly panning for gold, simple, put it into a long tom and shake it out.
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This note was uploaded on 01/25/2011 for the course ENV S 173 taught by Professor Staff during the Spring '08 term at UCSB.

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ENV S 173 Lecture 10 - ENV S 173 Lecture The environmental impact of western mining Development focus Technological focus Inexhaustibility of

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