"probably the most exciting application of the ge 312 was to the hot strip mill of mclouth steel co. in michigan. it was a difficult design inasmuch as each step in the process had to be varied on the basis of the measured values of the previous step. this required continuous high speed feedback to set the six different hot stands with absolute accuracy and reliability being essential; an error at one point could be magnified at the next, causing an entire process to go out of control. fortunately, the ge 312 met the challenge." h. oldfield, general manager of the ge computer department.