The potential for environmental impact is significantly less for limestone, sand, or gravel quarries than gold mines, and ...

While exploring deep inside a massive limestone mine, the team noticed a dark opening that didn’t seem to belong to the ...

Residents and government leaders in the small western South Dakota city of Piedmont are in shock that the state approved a limestone mining operation without notifying them in advance about the ...

While exploring a massive limestone mine with an underground lake, a group of explorers returned to investigate a cave they had previously discovered. After kayaking deeper into the mine and squeezing ...

Federal workers working in the limestone mine responsible for handling government retirements pushed back against Elon Musk’s claims of efficiency. Earlier this month, Musk told reporters inside the ...

On Wednesday evening, the U.S. Bureau of Land Management released a redacted copy of its long-awaited Determination of Common Variety report for the Rocky Mountain Industrials limestone mine, ...

Add Yahoo as a preferred source to see more of our stories on Google. This story is reported by South Dakota News Watch, a non-profit news organization. Find more in-depth reporting at www.sdnewswatch ...

A Clarion County company is hoping to expand its limestone mining operations in Washington County. A public meeting will be held Wednesday night to discuss a proposal for the underground facility. The ...