BOX ELDER COUNTY, Utah (ABC4) – One employee was killed and another seriously injured Tuesday afternoon in Box Elder County.

The two worksite accidents involved seasonal workers in the Promontory area.

A Utah State Parks ranger responded to reports of an off-highway vehicle (OHV) accident near Promontory Road Tuesday afternoon.

Around 1:40 pm while responding to the first accident, the ranger received a second call to assist with another OHV accident approximately a half-mile away from the first accident.

In the first accident, a worker reportedly sustained a serious injury and was taken to the hospital. That person is reported to be in stable condition.

In the second accident that immediately followed, a worker, 69-year-old William Dwaine Kossman, died on site.

Both employees were seasonal workers for the Weed Control Department, and both accidents occurred while the employees were working.

The county believes the two employees were involved in a rollover crash while operating UTVs in the course of their work.

Neither of the employees are believed to have been wearing helmets at the time of the accidents.

Box Elder County is reportedly cooperating with Utah State Parks and the Utah Occupational Safety and Health Division as they continue the investigation.

Anne K. Hansen, a representative for Box Elder County, states, “Our first concern is for the employees and their families. Our hearts are with them in the face of this terrible tragedy.”

More information will be provided as it becomes available.