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Directives
#
 1  1978 - 10/30/1978 - STD 03-12-002 [STD 3-12.2] - Uniformity in Interpretation of 29 CFR 1926.550(a)(9)

Standard Interpretations
#
 1  2003 - 01/16/2003 - Necessary precautions required to prevent entry into a swinging superstructure's radius.
 2  1991 - 09/20/1991 - Request for variance from standard on Cranes and Derricks
 3  1980 - 04/17/1980 - Barricade in accessible areas of the rear of the rotating structure of the crane secured to the under carriage.
 4  1976 - 08/13/1976 - Use of audible alarms in lieu of physical barriers.
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