Photo of butterfly valve which will be mounted above the emergency portal doors

The butterfly valve which will be mounted above the emergency portal doors

Watch the early stages of the emergency portal doors installation process.  The doors need to be able to be winched down in an emergency.  The winching set-up will be located on the outside of the portal.  Yesterday they were starting to install the top plate and butterfly valve.

Photo of portal door overplate

Plate which sits above portal doors is taken in the portal

Photo of team working on installing top plate

Team taking top plate into mine portal