Inspectors shall have in their possession at all times while on duty, and present upon request, the means of identification furnished by the Department to such persons. [36 FR 9814, May 28, 1971; 36 FR 10841, June 4, 1971. Redesignated at 42 FR 32514, June 27, 1977, and further redesignated at 46 FR 63203, Dec. 31, 1981]