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SME members and partners restore Pennsylvania streams

机译:中小企业成员和合作伙伴恢复宾夕法尼亚州的溪流

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摘要

Coal mining in western Pennsylvania played a key role in the Industrial Revolution and in two world wars. It continues to provide more than half of the Commonwealth's electricity. Only about 1 percent of recent mining operations that used environmentally sound methods have drainage problems. but historical activities have created a legacy of severe environmental and safety problems. By 1950, many communities that provided metallurgical-grade coal fro the steel industry disappeared. They were replaced by scarred landscapes characterized by dangerous highwalls, barren coal-refuse piles and spoil and orange-colored discharges.
机译:宾夕法尼亚州西部的煤矿开采在工业革命和两次世界大战中发挥了关键作用。它继续提供联邦一半以上的电力。最近使用环保方法的采矿作业中只有约1%的排水问题。但是历史活动造成了严重的环境和安全问题。到1950年,许多为钢铁工业提供冶金级煤炭的社区消失了。它们被伤痕累累的景观所取代,这些景观以危险的高墙,贫瘠的煤渣堆,弃土和橙色排放物为特征。

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