Cranes and Derricks in Construction

1926.1422Signals – hand signal chart65. 1926.1423Fall protection65. 437-003-1423Fall Protection67. 1926.1424Work area control69. ... (including keepers and locking pins). (9) Struck by counterweights. The potential for unintended movement from inadequately supported counterweights and from hoisting counterweights. ... Severe service. Where ... ................
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