PIMASA was constituted by public deed of November 20th, 1969, granted before the Notary of Valparaiso, Mr. Carlos Calderón Cousiño, with the objective of commercializing calcium carbide and ferroalloys. Afterwards, it expanded its commercial business to chemical products, metals and products for the mining.

This is how starting from the original business units (Metallurgical and Calcium Carbide) PIMASA has grown, highlighting the following landmarks in its history: