Which of the following actions can lead to the revocation of an approval certificate?

The correct choice indicates that all listed actions can lead to the revocation of an approval certificate. Each of these actions reflects a serious breach of compliance that regulatory bodies often take into account when assessing the validity of an approval certificate.

Failing to adhere to safety regulations compromises the safety and health of workers and can result in significant risks, making it a primary reason for revocation. Similarly, violating environmental protocols demonstrates a disregard for legal and ethical standards that protect natural resources and public health, which is crucial for maintaining an operating license. Lastly, non-payment of civil penalties signifies a failure to address past violations and may suggest a lack of accountability, which can also trigger revocation.

Thus, it is clear that maintaining compliance across safety, environmental, and financial obligations is essential for retaining an approval certificate in the mining industry. Each of these factors serves as a fundamental pillar that regulatory agencies consider when assessing continuance of permission to operate.