As of the end of December, the county had already used 10,000 tonnes of salt – close to two-thirds of the total for a typical winter season ...

Samples from the “Mountain of Salt” southwest of Camp Verde were determined to contain 76.61% sodium sulphate, 14.73% common salt and 3.6% other material (clay). Some of the sampled areas ...

Two Shasta County mines, one long‑treated and one newly listed, are sending toxic runoff toward the Sacramento River.

A U.S. district judge on Friday denied the latest request by a Native American tribe, environmentalists and other plaintiffs to stop the federal government from transferring land in Arizona for a ...

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