Unclassified documents. RME-3049. Final technical report (for May 1, 1951-June 30, 1953); pt. 1, Studies of minor constituents in some California beach sands; pt. 2, Optical and Chemical studies of minerals containing tantalum, niobium, titanium and uranium as preliminary to investigation of mineralogy of some Idaho placer deposits; by C. Osborne Hutton.