The economics-and the environment-are now right to turn coal and coke into gas.
1 "National CHP Roadmap: Doubling Combined Heat and Power Cpapcity in the United States by 2010", United States Combined Heat & Power Association, p. 2, March 2001.
2 "National CHP Roadmap: Doubling Combined Heat and Power Cpapcity in the United States by 2010", United States Combined Heat & Power Association, p. 19, March 2001.