The deposit was discovered in the 1970s, but is now exhausted.

In the 1930s, large deposits of brown coal were discovered there.

Important deposits in the state of Jalisco were not discovered until the late 1950s.

In the 1970s, many new deposits were discovered by aerial and ground surveys.

A few years later, around 1712-1713, a significant deposit of copper ore was discovered on the property.

The deposit was discovered in 1765 and has been in operation since 1769.

The deposit was discovered in 1977 and the mine opened in 1988.

The deposits at this mine were discovered in 1951.

In the early 1930s, a deposit of molybdenum was discovered near the summit.

In 1755 deposits of coal were discovered in the area and the town's economic development began.