Originally posted by rockman
There are several references to the Gavilan mine which produced manganese (not magnesium) for the US war effort during WWII. At that time, more than
6,000 people worked at the mine. It was operated by a Mexican subsidiary of the Homestake Mining Co. Lessened post-war demand diminished the
output, and the mine closed when a hurricane devistated much of the infrastucture in 1946. Although many of the foundations and concrete floors still
survive, all of the equipment was salvaged and moved to other operations. The ore consisted of veins of pyrolusite, traces of which can still be
picked up. There are great campsites, but the drive from the west side of the peninsula to the east can be quite challenging. High clearance is
mandatory.
Best References:
Baja Explorer magazine (Later called Baja Life), Nov-Dec, 1991. Article by Bob Vinton.
Manganese on Punta Concepcion, by James Noble, Calif Inst of Tech, in Economic Geology, v45#8, Dec, 1950. |