CREATE TABLE table_77865 ("CERCLIS ID" TEXT, "Name" TEXT, "County" TEXT, "Proposed" TEXT, "Listed" TEXT, "Construction completed" TEXT, "Partially deleted" TEXT, "Deleted" TEXT)

when was the site listed when the county is cochise?
SELECT "Listed" FROM table_77865 WHERE "County" = 'cochise'
SELECT "Listed" FROM "table_77865" WHERE "County" = 'cochise'