What is maintenance cost per machine hour? OMR 0.31 per machine hour OMR 5 per machine hour OMR 4 per machine hour OMR 20 per machine hour OMR 0.31 per machine hour What is material handling cost per move? What is maintenance cost per machine hour? OMR 0.31 per machine hour OMR 5 per machine hour OMR 4 per machine hour OMR 20 per machine hour OMR 0.31 per machine hour What is material handling cost per move