Abstract
Lithium hydride (LiH) is a useful, lightweight, neutron-shielding material for mobile nuclear reactors, such as the one considered for the Space Reactor Program. The fabrication of LiH bodies is traced from early pressing and casting operations through over a decade of casting development work to the current casting capability existing at the Nuclear Field Laboratory of Atomics International. The capability of the newest LiH shield casting facility, and what is bielieved to be the world's largest LiH neutron shield are discussed in detail. Basic characteristics of a number of LiH neutron shields are also tabulated.
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