Contributions to the study of coal
Subtitle: Influence of structural irregularities upon the chemical character of no. 6 coal in Franklin and Williamson Counties, Illinois
By: by E.T. Benson and G.H. Cady. Distribution of sulfur in Illinois coals and its geological implications, by G.H. Cady
Contributors: Benson, Edmund T.; Cady, Gilbert H. (Gilbert Haven), 1882-1970
Series: Illinois State Geological Survey Report of investigations -- no. 35; Report of investigations (Illinois State Geological Survey) -- no. 35.
Publisher: printed by authority of the State
Published: 1935
Place of publication: Urbana, Illinois
Language: eng
Number of pages: 41
Subjects: Coal; Coal mines and mining; Sulfur
Notes: At head of title: State of Illinois. Department of Registration and Education.