Abstract: At 11:35 a.m. on July 16, 2020, an employee had backed his concrete mixer truck under the ready mix plant so that it could be loaded with concrete. The employee exited and walked to the rear of the truck to check the alignment of the loading chute with the drum inlet funnel. When the employee arrived at the rear of the truck he stepped from the level walking surface onto the sloped surface under the truck and rolled his right foot. The employee fell to the ground and was able to crawl to the front of the truck and wave to get the attention of a coworker (Batch Plant Operator). Several coworkers responded to assist the employee, who was transported by ambulance to the hospital and was admitted for treatment. The employee incurred a fractured lower right leg and required surgery.