Roof bolters operate machines that install roof support bolts in underground mines.

Roof bolters work in the mining industry in underground mines. They secure the roof of the mine with bolts to prevent mine cave-ins. They install safety jacks to support the roof. They drill holes where the bolts will be installed. Roof bolters use a self-propelled bolting machine to drill the holes and set the bolts. They position the holes following safety rules.

The next step is installing the bolt. Roof bolters tighten the end of the bolt, using a tool called a turnbuckle. They also test each bolt for the required amount of tension, using a torque wrench. Roof bolters install these truss bolts across the roof span of underground mines.