Worksafe Victoria's investigating a fatal accident on the corner of Walnut Avenue and Seventeenth Street in Mildura.
Emergency services were called just after 10 am yesterday after receiving reports of someone being trapped.
A 58-year-old Rochester man was reportedly pinned between a bitumen roller and a trailer while loading the heavy equipment onto the trailer.
The worker was killed at the scene.
He was contracted to work on the Murray Basin Rail Project.
Another man was taken to Mildura Base Hospital for further assessment.
The group McConnell Dowell and Martinus Rail are offering counselling to workers and staff at this time.