During the summer of 1968, the Atomic Energy Commission authorized the establishment of the U.S. Transuranium Registry. The Registry is part of the organizational structure of the Hanford Environmental Health Foundation and is, in essence, a repository for all pertinent information available to identify any radiation hazard to the worker that may exist from exposure to transuranium elements. The major AEC contractors and a few of the licensees using plutonium and other transuranium elements have agreed to endorse and recommend that their affected employees support this program. Cooperation with the Registry is individually voluntary and includes release of medical and health physics data, and permission for postmortem analysis of certain organs.