Which of the following must be implemented to avoid a mine being classified as dangerous?

To avoid a mine being classified as dangerous, implementing controls in the Plan for Hazard Management Procedures (PHMP) is crucial. The PHMP is a systematic approach that outlines how hazards will be identified, assessed, and managed within a mining operation. By establishing robust controls within this framework, potential risks can be mitigated, thereby ensuring a safer working environment for employees and reducing the likelihood of incidents that could lead to the mine being categorized as dangerous.

Effective hazard management requires a comprehensive plan that may include engineering controls, administrative controls, and personal protective equipment tailored to the specific risks associated with the mining activities. These controls are essential for ensuring ongoing compliance with safety regulations and standards, which helps to maintain the mine's safety classification.

While regular outings for workers, employee safety training sessions, and periodic inspections by the owner are important components of a comprehensive safety program, they alone may not address the necessary systematic controls that specifically prevent the classification of a mine as dangerous. Without the structured approach by means of established controls in the PHMP, the mine may still pose significant risks. Therefore, the implementation of controls in the PHMP is the key factor in maintaining a safe and compliant mining operation.