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QID - 24917

How should you signal the crane operator to lower the boom and raise the load?

With forearm vertical and forefinger pointing up, move hand in small horizontal circles. 
            
Extend arm and point finger in the direction to move the boom. 
            
Extend arm with thumb pointing downward and flex fingers in and out. 
            
With arm extended downwards and forefinger pointing down, move hand in small horizontal circles. 
            

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