By the 1990's, the mine was operating around the clock.

By the 1890s, up to 15 mines were operating in the area, and the town's population exceeded 3000 people.

The mine associated with the village operated between 1858 and 1926.

More than 40 mines operated in the area over the next 75 years.

The mine only operated for 3 years until it was held up in litigation.

The mine has operated on and off until it closed for good in the early 20th century.

By 1952 the mine was operating at 10,000 tons per day.

By the end of 1910, the mine was operating at a loss, and it closed in 1911.

The mine was definitely operating by 1080, but no significant activities had begun before 850.

A mine of the same name operated from prior to 1882 to 1889.