Armour Research Foundation, Chicago, Illinois:
sis, Drs. W. McCrone and J. Kre.
petrographic analy-
U. S. Naval Radiological Defense Laboratory, San Francisco, California; radiochemistry, rare earths, uranium and plutonium, Drs. N. E.
Ballou and L. R. Bunney.
The USAF McClellan Central Laboratory, McClellan Air Force Base,
California:
radiochemistry, fission products, rare earths, induced ac-
tivities and uranium, Majors I. J. Russell, W. J. Worthington, Jr.,
c. M. Williams, H. O. Larson, J. Spencer, and Captains 0. J. Kvamme and
G. F. Jubber.