What is required when dumping material at a stockpile?

When dumping material at a stockpile, one of the key requirements is that wheels must not back over the edge. This practice is crucial for maintaining safety at the site. If the wheels of the truck were to back over the edge of the stockpile, it could lead to instability or even cause the truck to tip over, posing a significant risk to the operator and those working nearby.

Keeping the wheels away from the edge helps ensure that the vehicle remains stable while unloading, minimizing the potential for accidents. This safety measure is important in preventing injuries and protecting equipment, making it a standard operating procedure at many construction and mining sites.

The other options may relate to safety considerations but do not specifically address the operational protocols that directly affect the stability and safety of the dumping process. For instance, while daylight dumping may enhance visibility, it is not always a strict requirement, and manual unloading of trucks is not commonly practiced in bulk material handling. Additionally, maintaining a safe distance from the dumping area is important, but it must be balanced with the need for effective supervision and operational efficiency.