Construction workers are forbidden from crawling out onto the horizontal jib of a hammerhead tower crane.
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Q89: How is the Failsafe Principle of Redundancy
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Q92: It is permissible to move personnel on
Q93: Which of the following does not lead
Q95: The text mentions an electrical interlock on
Q96: Pictured is a
A)headache ball
B)wrecking ball
C)two-block
D)tube lock
Q97: Safety belts and lifelines for personnel on
Q98: The hazard of riding the headache ball
Q99: Movement of material on a personnel hoist
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