Inter Press Service: Four months after Peru’s worst toxic spill of mining waste, workers at the Caudalosa mine are demanding that it be reopened, while local communities want more cleanup of the rivers they depend on for water supplies. Caudalosa, a Peruvian-owned mining company, produces copper, zinc and lead. Its main mine is Huachocolpa Uno, employing some 1,000 workers in Huancavelica, in Peru’s southeastern highlands. The Jun. 25 collapse of a tailings dam caused the spill of 25,000 cubic metres of toxic waste….