1. Which process is the bottleneck? Show your work. Assume 40 working hours per week. There are 1 lathing machine, 3 drilling machines, 3 boring machines, 2 milling machines, and 4 grinding machines. 2. Which process is the bottleneck? Show your work. There is only one machine of each type. The lathing machine and the milling machine work 1 shift per day ( 40 hours per week). The drilling machine and the boring machine work 2 shifts per day ( 80 hours per week). The grinding machine works 3 shifts per day ( 120 hours per week)