What must the UMM ensure after giving inspector the 'notice of intention to seal mine'?

• A. The mine is sealed immediately
• B. The mine is sealed in the way acknowledged by the inspector and with written acknowledgement of details
• C. The inspector's acknowledgement is optional
• D. Sealing can proceed in an emergency without acknowledgment

Answer: (B)

When you issue the notice of intention to seal the mine, you must carry out the sealing exactly as the inspector has acknowledged, and you must obtain a written acknowledgement documenting the details. This means the method, scope, timing, and any specific conditions approved by the inspector are followed, and there is a written record confirming what was agreed and what was done. This written acknowledgement provides a verifiable trail for safety, compliance, and future audit.

Why other approaches don’t fit: sealing immediately without inspector approval would bypass necessary oversight; the inspector’s acknowledgement isn’t optional; and sealing in an emergency typically still requires proper authority and documentation instead of proceeding without written acknowledgement.