What is an important action to take with loose hazardous material near highwalls?

The action of stripping loose hazardous material for a safe distance from the top of pits or highwalls is critical for maintaining safety in surface mining operations. Highwalls are steep vertical cliffs or slopes formed by the excavation process, and loose material in these areas can pose significant risks such as rockfalls or landslides. By removing or stripping this material, the potential for these hazards is greatly diminished, protecting workers and equipment in and around the pit.

Additionally, addressing loose materials proactively prevents the accumulation of hazardous conditions that may arise if such materials are left in place. This action not only ensures safer working conditions but also contributes to the overall stability of the highwall. It is an essential aspect of risk management in surface mining, highlighting the importance of maintaining a safe environment in and around highwall areas.

In contrast, options that suggest leaving the material undisturbed, covering it with soil and vegetation, or simply monitoring it for a specified period could lead to unforeseen hazards or allow existing risks to escalate. Thus, actively removing loose hazardous material is the most responsible and preventative course of action.