A worker cuts black granite to make a countertop. Though granite, marble and “engineered stone” all can produce harmful silica dust when cut, ground or polished, the artificial stone typically contains much more silica, says a CDC researcher tracking cases of silicosis. danishkhan/Getty Images
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Artificial stone used to make kitchen and bathroom countertops has been linked to cases of death and irreversible lung injury in workers who cut, grind and polish this increasingly popular material.