While the world watched a miracle unfold in Chile last week, as 33 miners were raised from the depths of a copper-and-gold mine that had trapped them for 10 weeks, miners in China and Ecuador have since descended to their deaths, underscoring the ongoing perils and varying safety conditions of working underground...[T]he chances of surviving an accident and being rescued often depend on the extent to which safety standards have been enforced and how prepared mine workers are to respond in an emergency... [refers to San José Mine (part of San Esteban), Casa Negra Gold Mine (part of Minesadco)]