If no regulation or recognised standard is made, obligations may be met by:

• A. By waiting for another regulation to appear before acting.
• B. By choosing an appropriate way, taking reasonable precaution and exercising proper diligence to ensure the safety and health obligation is discharged in relation to the risk.
• C. By ignoring the risk and continuing work.
• D. By reducing the workforce.

Answer: (B)

When no regulation or recognised standard exists, the duty to stay safe is met by acting in a practical, risk-based way. The key idea is to assess what the risk is and then take reasonable precautions and exercise proper diligence to discharge the safety and health obligation in relation to that risk. This means you don’t wait for a rule to appear; you use sensible judgment, based on what a reasonable person would do in the circumstances.

In practice, you identify hazards, evaluate the likelihood and consequence of harm, and implement controls that are appropriate to the level of risk. This follows the idea of acting to reduce risk to as low as reasonably practicable, with ongoing monitoring and review to ensure the controls remain effective. In mining ventilation terms, that could involve ensuring adequate airflow, monitoring for hazardous gases, maintaining ventilation systems, training workers, and adjusting procedures as needed.

The other options don’t fit because they rely on inaction (waiting for regulation), ignoring risk, or reducing workforce rather than addressing the hazard. So the best approach is to choose an appropriate method, apply reasonable precautions, and exercise proper diligence to discharge the safety and health obligation.