New Castle County Police say Luis Benjamin Sanchez, 60, of Upper Darby, Pa. died after the incident involving a wood chipper.
Sanchez and a 47-year-old co-worker were using the chipper around 10:10 a.m. Thursday in the 600 block of Halstead Road.
Investigators say that's when a steel braided cable, used to pull tree limbs into the chipper, became caught. The cable was sheared off, striking both men.
Sanchez was killed and the co-worker was seriously injured. He is listed in stable condition at the hospital.
Both victims were working for Ricks Tree Service at the time of the incident.
The Occupational Safety and Health Administration was also called to the scene to investigate the accident.