Diagnostic computers monitor the entire operation of Primeau Argo Block's new plant in Milton, Ontario. The new plant is a replacement for an old plant in Cooksville, Ontario, built in 1946. The old plant had to be shut down because changes in the surrounding area over the years created problems with expansions that would have been neccessary to keep the plant open. The location for the new plant was carefully selected from about 50 properties, and most of the workers from the old plant came to work at the new one.