This volume describes the final results from completed investigational programs intended to test the performance of various concrete materials exposed to weathering.
Report issued by the Bureau of Mines over manganese deposits of Aroostook County, Maine. As stated in the introduction, "the work was undertaken to determine the extent of deposits largely concealed under glacial drift and to obtain subsurface sampled for manganese mineral identification and research in ore dressing and extractive metallurgy" (p. 1). This report includes tables, maps, and illustrations.
Report issued by the Bureau of mines over studies conducted on beryllium deposits in New England. Evaluations of the deposits are presented and discussed. This report includes tables, maps, illustrations, and photographs.
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