What distance from a pipeline is considered a threat when conducting blasting or surface mining?

The correct distance from a pipeline that is considered a threat when conducting blasting or surface mining is one-quarter mile. This distance is based on safety standards and regulations that are put in place to minimize risks associated with activities such as blasting, which can create vibrations, flying debris, and shock waves that may compromise the integrity of nearby pipelines.

When surface mining or blasting occurs within this proximity, the potential for damage to pipelines significantly increases. Ensuring a safe buffer zone of one-quarter mile allows operators to safely manage these risks while also safeguarding the structural integrity of the pipeline and preventing possible environmental hazards.

The other distances provided—such as one-half mile, one mile, and two hundred feet—do not align with established safety guidelines regarding the minimum safe distance required to protect pipelines from the risks associated with blasting activities. Hence, one-quarter mile remains the standard threshold to ensure safety and policy compliance during such operations.