The Frontier is small but scrappy. In just the last six months, our reporting has helped uncover questionable safety standards at a poultry plant where a man died after falling into an auger.

Residents near Enid say the smell of an oilfield waste disposal site made them feel sick. State officials weren’t sure who was in charge of enforcement.

Salt water laced with cancer-causing chemicals, a byproduct of oil and gas drilling, is spewing from old wells. Experts warn of a pollution crisis spreading underground and threatening Oklahoma’s ...