Authorities responded to Oldcastle Precast at the 10650 Hemlock Ave. just before 7:30 a.m. A man in his 40s was declared dead at the scene. The family identified him as Fernando Quezada.
A second worker, a man in his 20s, was rushed to Arrowhead Regional Medical Center.
According to the preliminary investigation, the workers were outside in an area used to coil cable under high pressure when a portion of a cable being rolled snapped, striking both men.
The San Bernardino County District Attorney's Office and Cal/OSHA are investigating, as is standard in workplace fatalities or serious injuries.
Quezada's family says the victim leaves behind a wife, two children and three grandchildren.