Search

Search U.S. government technical reports digitized or harvested by TRAIL.

Keyword Search

Enter your search term(s):
[advanced search]

3 results returned

Search results

• Methane emissions from an advancing coal mine section in the Pittsburgh coalbed
• Geology and gas content of coalbeds in vicinity of Bureau of Mines, Bruceton, Pa.
• Methane emissions from four working places in the Beckley mine, Raleigh County, W. Va.