As a part of a study on the heat processing of carbonaceous shales from southern Iowa coal fields to produce a road surfacing material, the liquid products from destructive distillation of the shale were analyzed by gas chromatography. The principal compounds found were pentane, isopentane, pentene-1, pentadiene 1,3 and pentadiene 2,3.These studies are believed to be of fundamental value in supplying information on the composition of these shales. Very little published data have been found and there is no evidence that gas chromatography has been applied to the problem. These studies also have a practical application in determining the economics of the overall project of utilizing the shales as road material. It is hoped that they may encourage further studies needed in this area.

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