Located in the northern part of the state of San Luis Potosí, the transnational mining company of Canadian origin, First Majestic Silver Corp. has finalized its first stage of exploration in the Sierra of Catorce where it has acquired 22 mining concessions that total 6, 326.58 hectares and place one of the most important sites of indigenous prayer in Mexico, and possibly the world, at risk...It is clear that a corporation whose method of exploitation is open pit mining, lixiviation through the method of flotation and application of cyanide is highly polluting, will alter the ecosystems, will dislodge contaminants into the soil and water tables; will interrupt, refill, dry, and divert hydraulic streams; will substantially alter the landscape and geologic cuts, and will provoke serious consequences for the local inhabitants. It is for this reason that environmental regulatory institutions must be strict in not allowing the operation of this mine...