Brimstone and Dolese Bros. plan a $400 million alumina refinery in southwest Oklahoma. The refinery aims to be the first new domestic source of alumina in decades. Brimstone is appealing a U.S.

Refinery and DNREC officials acknowledged communication shortcomings and pledged improvement. DNREC is investigating the incident and will evaluate necessary actions.

The Bellefonte II station, located in Bellevue State Park, reached 7 parts per billion on June 4. Lavoie said that could have been sourced from the refinery or just as plausibly from other ...