about the boom hoisting crane construction site and blue sky emphasizing detail sling |
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| navigate by keyword : arrangement assembly attachment backdrop background blue boom cable capacity chain components construction control crane danger detail diagram electrical electricity engineering equipment extension gear guidelines hanging heavy high highrise hoist hoisting hook icon industrial industry inspection jib joint lift lifting load luffing machine machinery maintenance manufacturing mechanical mechanism operation operations operator overhead power practices procedures pulley reel reeving rigging rope rust rusty safety silhouette site skill sky skyline skyward sling standards steel structural structure system techniques technology tower view white working |
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| it about the boom hoisting of crane at construction site and blue sky by emphasizing at boom crane detail and sling. |
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