The strip in the figure is reduced in one pass of a two-high mill whose two rolls are both driven; roll radius, strip thicknesses, width, friction coefficient, mean flow stress and roll speed are given on the figure. Take the contact length L = √(R·d), roll force F = σ_{f}·w·L and the torque on each roll T = 0.5 F·L. Determine (a) the maximum possible draft for this friction and roll radius (answer in mm), (b) the roll separating force (answer in kN) and (c) the total power required to drive both rolls (answer in kW).