Determination of ash in coals unusually high in calcite and pyrite
By: 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.
Contributors: Selvig, W. A. 1886-; United States. Bureau of Mines.
Series: Illinois.  State geological survey.  Report of investigations; no. 81
Published: 1942
Place of publication: Urbana, Ill
Language: eng
Number of pages: 10
Subjects: Coal -- Analysis.
Notes: "Literature cited": p. 10.
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."