Investigation into Seattle crane collapse underway

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Seattle and Washington state officials said Sunday there are no specific mandates, or laws about closing roads for crane disassembly. Four people were killed when a crane collapsed in downtown Seattle Saturday afternoon.
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Crane sections don't fall apart unless connection-bolts are removed. Look at the crane sections on the ground - sheared fasteners or not? Looks like contractor error from here...

douglaspohl
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Contractors typically dismantle cranes on Saturday to minimize the number of employees onsite (in addition to the traffic concern). A project this size can easily have upwards of 800 people working on a weekday. If done on a weekday, they might choose to send home non-essesntial workers....costing time and money.

numberbobo