e176.
The estimates of global coal production/reserves are derived from the Energy Information Administration, “International Energy Outlook 2009”, chapter 4, table 9. Those figures are for 2006, so the World Energy Council estimate: “Early studies suggest that the use of UCG could potentially increase world reserves of coal by as much as 600 billion tonnes”, from World Energy Council, “Survey of Energy Resources”, 2007, p 7. Dermot J. Roddy and Paul L. Younger, “Underground Coal Gasification with CCS: A Pathway to Decarbonising Industry”, Energy and Environmental Science, 3, 2010, pp 400–407. See also International Energy Agency, “World Energy Outlook 2010”. production estimate has been adjusted upwards in line with the global output rise indicated in chapter 1, figure 14. Short tons have been converted to tonnes. Cf. Energy Watch Group, Coal: Resources and Future Production, 2007, pp 21–26, available at http://tinyurl.com/q7eavva .