What action should be taken if a crane is near unidentified underground obstructions?

When dealing with unidentified underground obstructions, conducting a thorough site survey is crucial for ensuring safety. This action involves assessing the area to identify potential hazards before any crane operations commence. Underground obstructions, such as utility lines, pipelines, or unstable ground, can pose significant risks to the crane, the operator, and surrounding personnel. By completing a comprehensive survey, operators can gather vital information that aids in planning safe work procedures, avoiding accidents, and protecting both equipment and workers.

Continuing operations cautiously may lead to dangerous situations if the obstructions are not accurately mapped out. Similarly, while halting all operations (an option that might seem sensible) does not actively mitigate risks without understanding the specific conditions, simply notifying emergency services does not address the need for proactive site safety measures. Thus, the correct action of conducting a site survey ensures that all parties are informed and prepared to operate safely in the vicinity of potential underground hazards.