Browse TRAIL Inventories

Geology of the Lower Kittanning coalbed and related mining and methane emission problems in Cambria County, Pa.

Methane content and geology of the Hartshorne coalbed in Haskell and Le Flore Counties, Okla

Geology, mining, and methane content of the Freeport and Kittanning coalbeds in Indiana and surrounding counties, Pa.


Published Year

Subject

Author