Masonic, California. I took these last time I was there coyote hunting a couple years ago, I think. The town, or what's left of it is located right on the California/Nevada border, a few miles northeast of Bridgeport.
It had a small boom in 1912 although Masonic Mining District was formed back in the 1860s, I believe. They hit a couple of strikes in the hills above the town but due to the geological misfortune of being close to a volcano and an earthquake fault, the veins just disappeared due to the ground shifting. Lots of pocket gold in the area, but that doesn't pay for a hardrock mine.
The pictures are of an old store (I think), then the post office and the bottom two are the ruins of the mill.