30 CFR §77.1608

1. (a)Dumping locations and haulage roads shall be kept reasonably free of water, debris, and spillage.
2. (b)Where the ground at a dumping place may fail to support the weight of a loaded dump truck, trucks shall be dumped a safe distance back from the edge of the bank.
3. (c)Adequate protection shall be provided at dumping locations where persons may be endangered by falling material.
4. (d)Grizzlies, grates, and other sizing devices at dump and transfer points shall be anchored securely in place.
5. (e)If truck spotters are used, they shall be well in the clear while trucks are backing into dumping position and dumping; lights shall be used at night to direct trucks.