At the end of that century mining began in the area.

Mining began in October 2005 and is expected to last more than 20 years.

Actual mining began in the late 1870s to early 1880s.

After that, mining began to develop on a large scale.

Later, in 1970, mining began with positive results, leading to more exploration.

Mining began in the local area in the early 1720s.

Mining began in the late 1850s and stopped in 1979.

Mining began in 1883 at what became the town of Shafter.

Guano was found on the island and mining began in 1883.

These plans must be approved by federal or state authorities before mining begins.