Sunrise over the Montour No. 10 patch, on the edge of Library, PA in Southern Allegheny County.
Patch houses across the valley from the ones pictured above. The Pittsburgh Coal Company opened the Montour No. 10
coal mine and patch town in 1919. The mine operated until 1957, then was closed until it was briefly reopened in the 1970s.
The gob pile that is still there is visable behind these company built homes. Save a concrete abutment from a trolly track nothing
remains of the Montour No. 10 mine and coal processing facility. However, CONSOL, the heir to the Pittsburgh Coal Co. still operates research facilities there.