[2] George III of the United Kingdom granted the property to William Alexander, titled Lord Stirling.

[5] It subsequently underwent extensive metamorphosis during the Grenville orogeny, approximately 1.15 billion years ago.

The glaciers of the Pleistocene strewed trains of ore-bearing boulders for miles to the south, in places creating deposits large enough to be worked profitably.

As of 2017, other than the very top level of the mine (<100 ft), the entire lower section has been flooded due to the natural water table and hence is no longer accessible.

The tour spends about 30 minutes inside the exhibit hall which contains a wide variety of mining memorabilia, mineralogical samples, fossils, and meteorites.