About half of all U.S. mining fatalities in recent years – including 13 of the 27 fatalities in 2018 – were due to accidents involving powered haulage. That classification includes mobile equipment, conveyor systems, and anything else under power that hauls people or materials. MSHA has made the prevention of powered haulage accidents a priority, with an initial focus on three areas: mobile equipment at surface mines, seat belt usage, and conveyor belt safety..