Report providing results of hydrualic model investigations to test a new type of lock filling and emptying system to determine the final suggested construction for the Millers Ferry Lock in the Alabama River.

Report issued by the Bureau of Mines discussing studies conducted on the coal resources of the Flat-Rock area of Jackson County, Alabama. As stated in the introduction, "an investigation was planned to determine the extent, quality, and economic minability of coal deposits in Alabama reasonably close to ample fresh water sources that might be available for possible thermal electric power-plants" (p. 1). This report includes tables, maps, illustrations, and photographs.