The Royal Mines of Zacualpan Silver District is one of the oldest mining districts in the Americas, with mining activities dating back to at least 1527. In 1531, it was the first mining district in the Americas to be given the title 'Royal Mines' of Zacualpan, by proclamation under the Spanish Crown. To date, IMPACT personnel have catalogued over 5,000 old mine workings in the district, evidence of a long and extensive mining history, as well as significant future potential.
Numerous veins in the Zacualpan District have seen historic production but statistics from the early centuries of production are sporadic. In modern times, recorded silver production between 1975 and 2019 was over 26 million ounces silver.
The Zacualpan Silver District is host to an excellent mining environment, with a modern electric grid, abundant water supplies, paved highway access that runs through the middle of the district, and an experienced and skilled Mexican work force.