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Date: 2012-08-15 11:04:12Chemical elements National Helium Reserve Natural gas United States Bureau of Mines Lifting gas Carbon Helium-3 Hugoton Natural Gas Area Matter Helium Chemistry | myb-2008-heliu-f1[removed]xlsAdd to Reading ListSource URL: minerals.usgs.govDownload Document from Source WebsiteFile Size: 830,36 KBShare Document on Facebook |