McGee Parts Company is under tremendous pressure to complete a government contract for six orders in 31 working days. The orders are for spare parts for highway maintenance equipment. According to the government contract, a late penalty of $1,000 is imposed each day the order is late. Owing to a nationwide increase in highway construction, McGee Parts has received many orders for spare parts replacement and the shop has been extremely busy. To complete the government contract, the parts must be deburred and heat treated. The production control manager has suggested the following schedule:

a. Use Johnson’s rule to determine the optimal schedule.
b. Draw a Gantt chart for each operation.

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HEAT TREAT DEBUR Job Start Finish Start Finish 13 12 13 17 4 12 15 17 25 15 16 25 30 16 24 30 32 2. 3. CO