Contributions to the study of coal

Author(s)

（Report of investigations, no. 33, 35, 38）

Printed by Authority of the State of Illinois, 1935

General Library,University of Tokyo

[no. 33]T500:10200004710711, [no. 35]T500:10260004710703, [no. 38]T500:10210004710695

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Volume no. from series no.

At head of title: State of Illinois, Department of Registration and Education, Division of the State Geological Survey

No. 33. 106 p. -- no. 35. 41 p. -- no. 38. 30 p.

no. 33. Mineral matter of no. 6 bed coal at West Frankfort, Franklin County, Illinois / by Clayton G. Ball
no. 35. Influence of structural irregularities upon the chemical character of no. 6 coal in Franklin and Williamson Counties, Illinois / by E.T. Benson and G.H. Cady
Distribution of sulfur in Illinois coals and its geological implications / by G.H. Cady
no. 38. Proximate analyses and screen tests of coal mine screenings produced in Illinois / by L.C. McCabe, D.R. Mitchell and G.H. Cady