Almost all agriculture here is irrigated, and depends on wells and the Ignacio Alatorre Dam located in the Guaymas Valley. Fields here yield wheat, soybeans, safflower, corn, cotton with some fruit trees. The most important livestock here is cattle, with goats coming second. However, cattle production has decreased somewhat, with pig and domestic fowl increasing. The most important industry is related to processing fish products, such as canning and freezing, all located in the city proper. A relatively large number of manufacturing operations controlled by foreign companies maquiladoras have opened here employing over 11,000, producing precision machined components for aerospace engines, electrical and mechanical components for automobiles, medical devices, and plastic injection molding for a variety of industries. Construction related to the port is also a major employer. Some mining occurs here, mostly graphite, with some small quantities of gold, silver and lead. The most important economic activity in the municipality is fishing. Most fish the waters of the Gulf but some are involved in aquaculture. Species sold include sardines, shrimp, and squid. In rural parts of Guaymas’ coast, fishing employs over 80% of the population.