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Crane dismantled after Sydney collapse

AAP logoAAP 26/09/2016

A mechanical failure may have caused a crane accident that left three workers dangling about 60 metres above the ground in North Sydney, the construction union believes.

The trio - aged 24, 28 and 36 - were lucky to escape without serious injuries after the crane malfunctioned, collapsed and hit a concrete well at a construction site on Arthur Street on Sunday morning.

The workers, attached by lanyards, were suspended about 60 metres off the ground when the crane fell.

The 24-year-old managed to free himself and climb to the roof of the Meriton building while fellow workers used a second crane to lower a metal box to the trapped men and lower them to the ground.

Arthur Street was reopened to traffic early on Monday morning following an extensive salvage operation, the Transport Management Centre said.

CFMEU NSW secretary Brian Parker says he believes a mechanical failure may have caused the tower crane to collapse.

The broken crane would need to be analysed very carefully, he said.

The three riggers involved in the accident were treated for non-life threatening injuries at Royal North Shore Hospital.

SafeWork NSW says it's too early to speculate about the cause of the accident and investigations continue.

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