CREATE TABLE table_69234 ("Rank" CLOB, "Mine" CLOB, "County" CLOB, "Operator" CLOB, "Capacity  ( thousands of metric tons ) " CLOB)

What rank is the Silver Bell mine of Pima county?
SELECT "Rank" FROM table_69234 WHERE "County" = 'pima' AND "Mine" = 'silver bell'
SELECT "Rank" FROM "table_69234" WHERE "County" = 'pima' AND "Mine" = 'silver bell'