Coal, lignite and asphalt rocks
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This Bulletin deals with the composition of the various coals and lignites mined in the State, and discusses, briefly, their relative value for fuel purposes. This matter has not been investigated so thoroughly before and it is hoped that the information given will be of practical use. We have also investigated the occurrence and composition of the various asphalt rocks of the State as thoroughly as the present situation seems to demand. The different deposits have been described and many analyses have been made. This work has not been done before and we trust that attention will be turned to a material so well adapted for paving purposes.