[bergy]

Those IBM cards were what we used to program the computers with! All the students at General Motors Institute had to learn "FORTRAN IV". Each step in the program sequence had to be punched onto those cards and read into the computer. Raw data was also fed into the computers on punch cards. If you wanted to computer to "know" all of the build options on a car, a keypunch operator had to punch out an IBM card from the list provided. After the cards were read by the computer, the inventory requirements were calculated for the rolling build schedule. God I'm old!
Pete - I visited the St Catherines MCP many time when I was Supt of Production at Tonawanda MCP. It was pretty common knowledge in GM that St Catherines MCP was the most efficient and best quality foundry in GM.