The diagram below represents a simplified version of the steel production process at a steel mill and the capacity of each operation in tonnes per day (tpd). The outputs from iron ore processing, limestone processing, and coking coal oven need to be combined in a ratio of 4:1:2 into the blast furnace. Output of blast furnace equals the output of iron ore processing; limestone and coke are only for purifying and burning. The outputs from the blast furnace and recycled steel need to be combined in a ratio of 2:1 for the oxygen furnace. Output of oxygen furnace = Output of blast furnace + Output of recycled steel. The remaining processes have a ratio of 1:1 with their downstream process. tron Ore Processing 2000 tpd Blost n Furnace Continuous Casting 3,200 tpd Finishing Limestone Processing 600 tpd Furnace 3,000 tpd Mill 2,300 tpd 2.200 tod Cooking Coal Oven Recycled Steel 800 tpd 800 tpd 2 a. Calculate the daily capacity of the production process and identify the bottleneck. b. If the capacity of the bottleneck in part a is increased by 50 percent, what is the new daily capacity and bottleneck? c. What further improvements are needed to bring plant production to 2,700 tpd?