This paper describes our most recent analysis of U.S. manufacturing energy consumption and extends our previous efforts in two important ways. We have acquired new data that enable us to extend our previous period of study and thus examine three distinct time periods, two with stable energy prices (1958-1973 and 1985-1991) and one in which energy prices rose significantly (1973-1985). We have also adapted our method to examine the historical trends of carbon emissions associated with manufacturing.