A PSV valve failure at Roehm USA's Texas plant released ammonia, prompting emergency response, emergency management said.

A natural cleaner with an eye-watering smell, ammonia promises to cut through even the toughest stains. And while you may never have used the stuff, you've no doubt heard of it. Pro cleaners sing ...

The Spring Fire Department urged residents to not throw hazardous materials, like acid or ammonia, in the trash. SPRING, Texas — Three sanitation workers were taken to a hospital after a container of ...