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-. "February 18, 1993," G.17 Industrial Production and Capacity Utilization (1993-02-18) : 16-17. https://fraser.stlouisfed.org/title/77/item/63612/toc/455158 , accessed on April 18, 2024.