NIOSH will use the following sources of information for dose reconstructions, as necessary:
(a) DOE and its contractors, including Atomic Weapons Employers and the former worker medical screening program;
(b) NIOSH and other records from health research on DOE worker populations;
(c) Interviews and records provided by claimants;
(d) Co-workers of covered employees, or others with information relevant to the covered employee's exposure, that the claimant identified during the initial interview with NIOSH;
(e) Labor union records from unions representing employees at covered facilities of DOE or AWEs; and,
(f) Any other relevant information.