01321cam a22002891 4500 gs 42000236 DLC 20260227111348.0 780911s1942 ilua b s000 0 eng gs 42000236 (OCoLC)4212574 DLC UU OCoLC DLC premarc TP325 .R39 662/.6 Rees, Orin Wainwright, 1898- Determination of ash in coals unusually high in calcite and pyrite, by O.W. Rees and W.A. Selvig, in cooperation with United States Department of Interior, Bureau of Mines ... Printed by authority of the state of Illinois. Urbana, Ill., 1942. 10p. incl.tables. 25cm. Illinois. State geological survey. Report of investigations no. 81 At head of title: State of Illinois, Dwight H. Green, governor. Dept. of registration and education, Frank G. Thompson, director. Division of the State geological survey, M.M. Leighton, chief, Urbana. "Reprinted from Industrial and engineering chemistry, analytical edition, vol. 14, no. 3, March 15, 1942." "Literature cited": p. 10. Coal Analysis. Selvig, W. A. (Walter Alfred), 1886- United States. Bureau of Mines. 27821 27821