SELECT MAX(rank) FROM table_name_21 WHERE county_and_state = "silver bow county, montana" AND capacity__thousands_of_metric_tons_ > 45
Di Silver Bow County, Montana, ketika kapasitasnya lebih dari 45 ton, apa peringkat tertinggi yang ditemukan?
CREATE TABLE table_name_21 (rank INTEGER, county_and_state VARCHAR, capacity__thousands_of_metric_tons_ VARCHAR)