Our host here at Delia's Trailer Park is Bonnie. We're the only ones here just now, so she offered to take us in her Jeep up into the mountains south of Etzatlan to an old mining town. The El Amparo mine was one of the most successful silver mines in the state of Jalisco. The mine was originally started up in 1904, but had it's heyday between in the 1920's.
It's difficult to find all the information online, but it seems that the still productive mine was shut down around 1940 because of a combination of poor management and the unreasonable demands of the unionized miners.
All that remains are the ruins.