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-. "November 15, 1993," G.17 Industrial Production and Capacity Utilization (1993-11-15) : 16-17. https://fraser.stlouisfed.org/title/77/item/63621/toc/455307 , accessed on April 23, 2024.