Board of Governors of the Federal Reserve System (U.S.), 1935-. "Electric Power Use: Manufacturing and Mining," in Board of Governors of the Federal Reserve System (U.S.), 1935-. "April 15, 1994," G.17 Industrial Production and Capacity Utilization (1994-04-15) : 16-17. https://fraser.stlouisfed.org/title/77/item/63626/toc/455490 , accessed on April 18, 2024.