Second, the gas must be able to move through the coal at flow rates sufficient to support a commercial well. Better knowledge of both of these factors is necessary to evaluate and recover the maximum amount of natural gas present in the extensive US coal... Department of the Interior and related agencies appropriations for 1990 ... - Página 26 por United States. Congress. House. Committee on Appropriations. Subcommittee on Department of the Interior and Related Agencies - 1989 Vista completa -
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