. The changing Illinois environment : critical trends : technical report of the Critical Trends Assessment Project. Man; Pollution; Environmental protection; Ecology; Environmental impact analysis. 1830 1850 1870 1890 1910 1930 1950 1970 1990 YEAR Figure 11. Production, consumption, and resenes of coal in Illinois. Note that resenrs are in billions of tons, while production and consumption are in millions of tons per year. Sources: Cady 1954, Hopkins and Simon 1974, Illinois Department of Energy 1982, Tweworgy and Bargh 1982, Damberger 1993. COAL STATIC LIFETIME. Figure 12. Static lifetime of
. The changing Illinois environment : critical trends : technical report of the Critical Trends Assessment Project. Man; Pollution; Environmental protection; Ecology; Environmental impact analysis. 1830 1850 1870 1890 1910 1930 1950 1970 1990 YEAR Figure 11. Production, consumption, and resenes of coal in Illinois. Note that resenrs are in billions of tons, while production and consumption are in millions of tons per year. Sources: Cady 1954, Hopkins and Simon 1974, Illinois Department of Energy 1982, Tweworgy and Bargh 1982, Damberger 1993. COAL STATIC LIFETIME. Figure 12. Static lifetime of Illinois coal resenes. Static lifetime is resenes divided by current annual consumption. 234. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Illinois. Dept. of Energy and Natural Resources; Critical Trends Assessment Project. Springfield, Ill. : Ill. Dept. of Energy and Natural Resources
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