Sinkholes are fairly common, due to collapsed caves, old mines or dissolving material, but the circumstances in South Dakota ...

Sinkholes are fairly common, due to collapsed caves, old mines or dissolving material, but the circumstances in South Dakota ...

Miners Day is the biggest annual event for Frederick, a town that also holds a hot air balloon festival and chainsaw carving ...

Some believe we may have already reached that point. Gold mine production totalled 3,531 tonnes in 2019, 1% lower than in 2018, according to the World Gold Council. This is the first annual ...