Search

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

Keyword Search

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

4 results returned

Search results

• Degasification of virgin Pittsburgh coalbed through a large borehole
• Commercial-quality gas from the multipurpose borehole located in the Pittsburgh coalbed
• Degasification and production of natural gas from an air shaft in the Pittsburgh coalbed
• Directionally controlled drilling to horizontally intercept selected strata, upper Freeport coalbed, Green County, Pa.