was considered the most advanced electrical system of its time in Mexico. Not surprisingly, it worked well until the 1970s, when it was finally shut down. The French community also established a hospital to treat the mine's workers. The Greek doctor Diamant Hadji-Mihaloglou was briefly in charge of the medical services at the hospital; he then returned to France. The French company operated until 1954, when the tax exemption expired. The project then went bankrupt and the mine was shut down. Mexican government operation After 1954, the Mexican government through its Mining bureau (Namely the Comisión de Fomento Minero) reopened the works under the name of CMSRSA (Compañía Minera Santa Rosalía) to prevent the economic collapse of the town. It operated, continually at a loss, using the same (rather archaic) equipment and processes until 1984, when it definitively closed. Canadian operation In 1992, renewed interest by Canadian investors led to the establishment of a new mining claim. Subsequent exploration established that vast amounts of copper ore, as well as commercial quantities of cobalt, zinc, and manganese still existed on the site. Over a fifteen year period, two test mining programs, two process pilot campaigns, and a +38,000 metre in-fill drill program were carried out, culminating in a Definitive Feasibility Study (DFS). The DFS was completed in 2007 by the current lease holder - Minera y Metallurgica del Boleo - and followed by a Technical Report update issued in March 2010. Boleo is expected to yield copper-cobalt-zinc-manganese and is fully permitted. However, the old metallurgical process used by previous operators is unfit for the recovery of these values. Small scale testing has established that a hydrometallurgical process can effectively recover all four metals, with competitive economics. The hydrometallurgical process, and the lack of fresh water at the site requires the construction of a desalination plant. Construction at Boleo re-commenced in November 2010. Construction cost overruns reported by Baja Mining Corp. (TSX: BAJ) in 2012 threatened to halt or delay construction of the project. Korean operation An agreement was reached in July 2012, transferring majority ownership interest and control of the project to the Korean consortium, in return for funding the reported cost overruns. The Korean consortium led by Korea Resources Corporation (“KORES”), a state owned resources enterprise of the Republic of Korea, held a 73.8% of the ownership interest in Minera y Metallurgica del Boleo ("MMB") at the time. Since obtaining