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History
The Terronera Project is situated near Santiago de los Pinos, which is located within the municipality of San Sebastián del Oeste, which was founded in 1605 during the Spanish colonial period. By 1785, the Sebastián del Oeste mining district consisted of more than 25 mines and a number of smelters and was considered one of the principal sources of gold, silver and copper for New Spain.
In the late 1980s, the mining group Industrial Minera Mexico S.A. (IMMSA) began exploring the historical mining district and continued with geological mapping and sampling of outcropping structures of a number of veins. Over the years, IMMSA drilled several holes intersecting widespread silver-gold mineralization, mainly at the Terronera Vein; however, a Mineral Resource estimate was not undertaken.
In 2010, Endeavour Silver acquired the option to purchase the San Sebastián del Oeste properties from IMMSA. Since then, we have conducted several exploration and drilling campaigns that have resulted in Mineral Resource estimates, and multiple independent technical reports. Exploration activities include geological mapping, data compilation, rock chip sampling, trenching, soil geochemistry surveys, and topographical and geographical mapping using satellite photogrammetry.
