The Sinclair oil refinery is laying off 87 employees. Thirty-two workers at the southern Wyoming refinery, one of the largest in the region, have already been laid off. Another 55 were notified ...

But residents of Black Eagle, which is not part of Great Falls but is adjacent to its northeast corner, still have industry neighbors in the Calumet oil refinery. Living downwind of the refinery ...

HAMMOND — Government lawyers allege an oil re-refinery plant with a location in East Chicago violated the Clean Water Act after they discharged wastewater with excessive pollutants into the city ...