Mountain Mining

The History of Mining in California

29

gold, bars, gold bars, mining, wealth

The History of Mining in Colorado

30

green trees, collapsed wood

Top Historical Mines to Visit in California

27

a cottage made of rocks from the mine

The Highest Mines in the World

34

mining pit

What is Mountain Top Removal Mining

27

soil erosion, tree-less mountains

Top Historical Mines to Visit in Colorado

33

a railway in a mine tunnel

Largest Mines in the World

31

Panorama of Grasberg mine

What are the oldest mines the world?

38

Production of Salt Mine

Famous Gold Rush Towns You Can Visit

37

The Metropolitan City of Gold, Johannesburg