For almost 100 years, the Soudan mine in Tower, Minn., yielded the purest iron ore in the country. Now University researchers will mine knowledge that could put them on the forefront of physics ...

Changes at the federal level are beginning to limit what the Minnesota Department of Natural Resources can do.

Josh Shapiro is proposing Laurel Caverns be tapped to become Pennsylvania’s first underground state park. The House tourism ... A local coal mining company broke up some of the rocks inside ...

Petrified Forest National Park, 18 miles southeast of Holbrook ... and deposition of the potash resources would preference underground mining techniques that have not yet been implemented based ...

Though it doesn't get the attention of epic Texas landscapes like Big Bend or the Guadalupe Mountains, the one-of-a-kind Longhorn Cavern State Park is an underground marvel worthy of a visit.

For those interested in the region’s mining history, the Soudan Underground Mine State Park, about 30 minutes from Ely, offers tours of Minnesota’s oldest iron ore mine, taking visitors 2,341 feet ...

The city, through its HRA, is working with private development company D.W. Jones, Inc., which has completed numerous housing projects across the state. Once the project ... the new Lake ...

South Carolina’s newest state park has an opening date. Park officials on Wednesday updated the Lake Murray community on plans for Pine Island, which will now have a “soft opening” to the ...

San Manuel Mine was once the world’s largest underground copper mining operation ... former Ventilation Engineer for Magma Copper Co. Arizona State Freight Plan (ADOT MPD 085-14) prepared ...

The Conservation Fund, a national nonprofit, agreed to pay $60.1 million for 7,765 acres near the Okefenokee Swamp once ...