Mining starts in Nevada in 1849 with the discovery of gold in a stream of Carson River.
By 1906 a boom had developed in copper mining in Ely
Nevada.
mining is Nevada's major resource
1746 in Britain
mining
Tourism, mining, and agriculture are the main agriculture in Nevada.
Nevada
Mining and dams
Wyoming is not known for diamond mining.
Gold mining
near great basin
Gold Mining on 1774, In Arizona first open pit copper mine opened at Ajo in 1917.