Snowy Hydro TBM Florence update says;

'Tunnel boring machine Florence has been ramping up excavating the Snowy 2.0 headrace tunnel, recently reaching 12 metres per day for a period.

With progress slowing in very hard rock yesterday, today the Snowy 2.0 project team ceased excavation by the TBM due to rock pinching on the machine’s shield.

We are currently investigating the best way to relieve this pressure prior to recommencing excavation.'

https://www.snowyhydro.com.au/news/tbm-florence-update/