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| == Documents == | | == Documents == |
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| === Joint Subcommittee Studying Measures to Reduce Emissions from Coal-Carrying Railroad Cars ===
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| * [[:File:General Air Corr from Source 48974222.pdf|Norfolk Southern Corporation, Environmental Protection Department, 1999 Annual Report to the Joint Subcommittee Studying Measures to Reduce Emissions from Coal-Carrying Railroad Cars per Senate Resolution No. 257, January 2000]]
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| * [[:File:General Air Corr from Source 36206051.pdf|Norfolk Southern Corporation, Environmental Protection Department, 2001 Annual Report to the Joint Subcommittee Studying Measures to Reduce Emissions from Coal-Carrying Railroad Cars per Senate Resolution No. 257, January 2002]]
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| == References == | | == References == |