EMINCAR – Cuba

EMINCAR – Cuba

The inadvertent oxidation of sulphidic mine wastes - and the consequent release of acid mine or rock drainage - is one of the main environmental issues facing the mining industry. Broken waste rock and tailings caused by mining operations can expose large amounts of pyrite and other sulphides to the effects of water and oxygen - greatly accelerating the oxidation process which can speed up the release of pollutants into surface and groundwater.

As part of the evaluation of the Castellanos and Santa Lucia lead-zinc deposits in Cuba by Empresa Minera del Caribe, we were commissioned to carry out a feasibility study – including an extensive programme of metallurgical testwork and AMD tests. 

The results from our tests were assessed in conjunction with specific geological knowledge of the deposit to establish the risks that AMD might impose on the project. This assessment allowed the development of an AMD management plan to make sure that additional measures could be implemented to reduce project risk and environmental impact. The assessment was undertaken by recognised environmental experts using industry best practice for guidance.