An Arizona interstate reopened on Wednesday evening a day after a deadly crash caused a tanker truck to leak hazardous material into the desert. About two miles of Interstate 10 was closed in both ...

A portion of an Arizona freeway will remain closed in both directions into Wednesday morning after a deadly rollover resulted in a hazmat spill Tuesday afternoon, according to the Arizona Department ...

Currently, nitric acid—a crucial chemical for weapons production—must be synthesized from ammonia, tying the United States to foreign exporters and presenting a supply chain risk in a future war.

A massive chemical leak spewed toxic orange plumes of dangerous acid into the sky, forcing a no-fly zone and mass evacuations near an explosive plant in Ohio, according to reports. About 3,000 gallons ...

TUCSON, Ariz. -- The Arizona Department of Public Safety is maintaining a shelter-in-place order to a one-mile perimeter around the hazardous spill of liquid nitric acid on Interstate 10 in Tucson.

I INCLOSE the results of some experiments I have lately made to ascertain if the cost of working the nitric acid batteries of Grove and Bunsen could be reduced. I find that the nitric acid can be ...