On the day of the incident, the injured worker was working in McGuckian Milling Company's blending plant when he noticed a blockage had occurred at a holding bin.
While attempting to rectify the defect, his arm was drawn into an unguarded rotating screw auger, resulting in the amputation of his left arm below the elbow.
The investigation found that Brian McGuckian failed to provide adequate information, instruction and training for the operation, use and maintenance of the work equipment.
Investigators also found there was a lack of adequate guarding on the screw auger conveyor.
"Employers must ensure that all machinery is adequately guarded and that their employees are trained and competent to operate machinery," said HSENI inspector Gavin Rowan.
"This injury was preventable, and the risk from the unguarded machine should have been identified.
"Employers should make sure that they properly assess and apply effective control measures to minimise the risk from dangerous parts of machinery."
