Rock Type: Sandy shale
Interval: Coalburg seam
Age: Middle Pennsylvanian Period, approx. 307 million years.
Location: Nicholas County, West Virginia; Ramp Run Surface Mine #1, located
about 12 miles north of Summersville, West Virginia. Turn west off route
19 north of Summersville onto Spruce Run Road. Follow it out the ridge about
7 miles before veering left down into Buffalo Creek.