The UG mining was stopped for a week or 2. Ore is normally stockpiled so likely ore processing would have continued with minimal impact.
The stoppage was minimal. Best estimate would be that metal production continued close to expectations, there would be remediation costs offset by a reduction in mine wages. The stockpile of ore would be reduced, but will be replenished with time.
Things could have been much worse. Congrats to Mel for fixing things quickly.