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

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 ...

Two kayakers investigating strange openings in a hillside entered an abandoned limestone mine and began paddling through its flooded tunnels. Deep inside the cavern they discovered a massive ...

While exploring deep inside a massive limestone mine, the team noticed a dark opening that didn’t seem to belong to the man-made tunnels. Curious about where it might lead, they decided to investigate ...

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 ...

FT. MYERS, Fla., Sept. 25, 2025 /PRNewswire/ -- North American Mining has secured a new 10-year contract to provide limestone mining services in Ft. Myers, Florida, expanding North American Mining's ...

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 ...