March 31, 1870 George Gleason, a miner, and his partners applied for a patent on a gold lode in Soledad Canyon near Acton, Ca ...

The artifacts reveal the harsh working conditions in ancient Egyptian gold mines under the rule of the Ptolemaic dynasty.

Then, under British rule, salt mining ramped up in the 1870s. Today, it's a popular tourist destination and a working mine, producing the majority of the world's pink salt. All the mining starts ...