The accident: A construction crew was removing screws from metal sheets on the roof of a building scheduled to be dismantled. A portion of the roof gave way, causing a worker standing on that section to fall through to ground level and hit his head on the concrete floor.
The accident: A welder was preparing to survey and weld joints at the top of a steel frame that had just been erected. Using a scissor lift platform to access the work area, he extended the lift approximately 12 feet.
The accident: One man in a five-man crew was using a jackhammer, which was connected to an extension cord. The jackhammerās worn extension cord came into contact with standing rainwater, and the man, who was not wearing company-issued rubber boots, was electrocuted.
The accident: A four-man crew was adding spaceĀ to an existing building by erecting a brick wall. The workers had set up scaffolding, and were pouring grout and inserting rerod into the bricks.
The accident: A crew was working on a landfill gas processing facility installation. While moving a load with a crane, the crane operator touched the boom tip of the crane to an overhead power line with a carrying capacity of more than 12,000 volts.
The Accident: An ironworker for a steel erection company was performing demolition work on a hollow block wall inside a building. An opening had been cut in the wall for a doorway, leaving 16 inches on either side, and leaving the header beam suspended without support.
The accident: A construction crew was demolishing an addition to a school building when a roof collapsed, seriously injuring two workers.
The accident: A subcontractor was performing demolition work inside a vacant school when a slab of concrete fell on him. A demolition robot then fell onto the concrete, pinning the worker underneath the slab from the neck down.
The accident: A contractor was removing tree stumps on a road project and processing the stumps and other wood debris in a tub grinder. An excavator loaded the grinder, operated remotely by a worker on the ground.
The accident: An employee was repairing a 60-foot telescopic boom lift that had a malfunctioning counterbalance valve. He loosened the valve from underneath the rear of the lift and then climbed onto the liftās base to access the valve from the front of theĀ lift, positioning him directly under the boom.
The accident: A backhoe operator was working on covering a pipe in a drainage ditch next to a retaining wall. He parked the machine on a slope and exited the backhoe while leaving the bucket, which was full of rocks and gravel, elevated.
The accident: The contractor instructed an excavator operator to move dirt, clear debris and fill a trench, and then left the jobsite. Upon his return, he saw the excavator ā which was an older model that had been purchased used ā positioned overĀ the trench, with the operator pinned to a tree and crushed by the machine.
The accident: A two-man crew was using a backhoe loader and hand shovel to clear earth from a homeās foundation footing. The backhoe operator dug a 2-foot-wide by 2-foot-deep excavation around the footing while the second worker removed extra dirt with the shovel after the backhoe passed throughā¦
The accident: A contractor was operating a backhoe close to a concrete wall. Another worker approached the backhoe on the operatorās blind side and walked between the wall and the swinging structure of the backhoeā¦.
The accident: A utility contractor was using an excavator with a lifting eye connected to the bucket to load concrete manhole sections. A coworker on the ground connected the sections to the excavator and then disconnected them once the sections were placed on a truckā¦.
The accident: Using a borrowed compactor, an operator was compacting soil for a new road. The machine had a faulty starter system ā when used on rough terrain, the engine would die, requiring a manual jump startā¦
