Abstract: At approximately 3:00 p.m. on March 16, 2020, Employee #1 and 2 coworkers where doing tree maintenance along a transmission line. Employee # 1, coworker #1 and #2 were riding an ATUV, a Polaris Ranger 900XP (equipment #ALT 19), when the driver, Employee # 1, lost control and crashed. Coworker #1 and coworker #2 were passengers. It was the end of their workday, so they drove down the hill to the staging area. As they entered the right turn curve on the road, the ATUV abruptly accelerated. It drifted off road, and the left front tire hit a tree stump. The ATUV went airborne and impacted the side of a tree in the front. The impact did not stop it; it crashed onto another tree approximately 30 feet ahead. The ATUV came to a stop at first; but then it began to roll downhill, rolling at least ? of a turn and ending up on its right side. Employee #1 was trapped, and coworker #1 and coworker #2 were on top of him. Coworker # 1 unbuckled his seatbelt and extracted himself from the ATUV. Coworker # 1 helped coworker #2 out. Then, Coworker #3 and coworker #1 helped Employee #1 to free himself since his right leg was trapped. Coworker #1 called for help. Other employees including the supervisor down the hill heard the crash and ran to aid. Employee # 1 sat on the ground. Employee # 1 looked like he was in a lot of pain; he had broken his leg and his chest looked dislocated. Employee # 1's face turned purple. Coworker #3 provided CPR to him. The supervisor was not able to get radio communication from the crew, and he called 911. Employee # 1 sustained internal injuries and was pronounced dead on site. Officers reported the accident to the OSH office at approximately 4:00p.m. That same day at 5:00 pm the undersigned CSHO accompanied by another CSHO arrived at the worksite and opened the inspection with employer representatives. The employer was issued the following citations: Regulatory citation for Title 8 CCR Section 3203(b)(2).