When did the mines open and close?

The opening and closing dates of mines can vary significantly depending on the specific mine in question. For example, the historic Comstock Lode in Nevada opened in 1859 and saw significant production until it began declining in the 1880s. In contrast, the more recent Grasberg mine in Indonesia opened in 1973 and continues to operate as of 2023. If you have a specific mine in mind, please provide its name for more precise information.