What kind of accident is about to happen?

Workers are assembling a plastic greenhouse. A tractor shovel is being used to move a bundle of pipes for the frame while a worker steadies the bundle. Can you predict what's about to happen?

Look what happened!

The worker who was steadying the bundle tripped and fell over a ridge in the ground, and was run over by the front wheels of the tractor shovel.

Tips for preventing similar accidents
1.	When moving suspended loads, use a mobile crane or a vehicle-type construction machine with a crane attachment. (Some types of moveable cranes can be moved while carrying loads.)
2.	When loading or unloading long materials, use a guide rope to guide the materials from beyond the operating radius.

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