Select the correct option to test your answer: A 2 - 6 m 3 /s min B 8 - 19 m 3 /s min C 19 - 22 m 3 /s min D 25 - 30 m 3 /s min Correct Answer: Option B (8 - 19 m 3 /s min) Verified correct option for Mining Engineering (Opencast Mining).