Upon receipt of evidence pursuant to an investigation under the Act, each investigation participant who is not a NIST employee shall:
(a) As soon as practicable, transfer the original evidence to NIST, and retain a copy of the evidence only if necessary to carry out their duties under the investigation; and
(b) For any evidence that cannot reasonably be duplicated, retain the evidence in accordance with NIST procedures for preserving evidence as described in Sec. 270.330 of this subpart, and upon completion of the duties for which retention of the evidence is necessary, transfer the evidence to NIST. [68 FR 4694, Jan. 30, 2003, as amended at 68 FR 24345, May 7, 2003]