Collinea Metallifere, Tuscany, Italy. Area pollued by acid mine dreinage

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Keywords: ., acid, affect, biological, coal, consumption, crisis, cultures, diversity, drainage, earth, effects., environment, environment., form, heavy, importance, iron, issue, maintain, metal, mineral, mineralis, nature, patterns, pollution, populations, put, pyrite, real, recognized, red, rocks, soil, stress, sulfuric, waste, water