Question: What is the capacity of the mine that is operated by Cyprus Amax Minerals?
SQL: SELECT "Capacity (thousands of metric tons)" FROM "2-12728719-2" WHERE "Operator" = 'Cyprus Amax Minerals';

Question: What rank is the Silver Bell mine of Pima county?
SQL: SELECT "Rank" FROM "2-12728719-2" WHERE "County" = 'Pima' AND "Mine" = 'Silver Bell';

Question: What is the capacity of the Pinto Valley mine in Gila county?
SQL: SELECT "Capacity (thousands of metric tons)" FROM "2-12728719-2" WHERE "County" = 'Gila' AND "Mine" = 'Pinto Valley';