"… e southwestern corner of Pennsylvania, two companies — Consol Energy and Foundation Coal Holdings — are trying to change the stream classification known as “high qualit …"

"… ($111 a ton) of just two years ago ($45) — is giving rise to a new mine.Foundation Coal Holdings, the nation’s fourth largest producer of underground coal, has announced …"

"… tions in Appalachia. Four of them are in southwestern Pennsylvania.4. Foundation Coal Holdings is the fourth-largest coal producer, with 12 collieries in Appalachia …"