Specialists in the subject have explained that during the process to obtain gold, mercury is used, which is why soil and water pollution is evident; waters and sediments drain contaminated with tons of mercury to Caño Crucitas and the Infiernillo River, whose surface waters flow into the San Juan River, Nicaraguan territory. The process used with gold is called “tombola”, in which an average of 2 to 3 ounces of mercury per ton is dispersed. Allegedly, more than 100 “tombolas” are being used daily in the border sector of both countries (Nicaragua-Costa Rica).
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