Trace Elements in West Virginia Coals

Uranium (U) Summary Statistics

Uranium averaged 1.59 ppm (± 1.35 ppm) in West Virginia coals with a histogram showing a near normal distribution with a tail toward higher values. The highest U contents were all from the Sewickley coal and range from 10.09 to 17.12 ppm. Uranium correlated very poorly with ash yield, and poorly with tellurium (Te), bismuth (Bi), samarium (Sm), scandium (Sc), thorium (Th) and praseodymium (Pr).

**Spearman Correlation Coefficients (r) with Uranium**
Ash Yield	Te	Bi	Sm	Sc	Th	Pr
+0.5493	+0.6852	+0.6614	+0.6447	+0.6122	+0.6106	+0.6086
n = 827	n = 113	n = 171	n = 520	n = 827	n = 804	n = 80

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Page last revised: March 1, 2002

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