There are pictures on railway herald saying that. Undergoing sander testing.
The line to the colliery has been upgraded durign testing of NR infrastructure equipment and is now almost as good as new as it has been entirely relayed and tamped by machinery !
Thanks very much for sorting that out for me.
The High Marnham test track is my local line & I have been following all the action with much interest. It's official name is 'The Rail Innovation & Development Centre'
The new 'High Output Track Renewal Train' was there for commissioning & staff training, & as you stated it virtually relaid the whole track from Tuxford-Thoresby colliery jnc. Afterwards before it left the area it relaid the branch line from Thoresby colliery jnc to around Clipstone. There were lots of trains in & out, bringing new rails, concrete sleepers, Ballast etc. Mostly EWS/DBS 66s, the odd 60, and even DBS red 67018.
The old Bevercotes colliery branch which joins @ Boughton jnc. has been cleared of vegitation & eventually will be reopened as part of the test track.
At Tuxford new sidings are being laid & a new chord is being laid to connect it to the ECML, complete with overhead electrics. It is intended to raise the line speed to 70/75mph.
So should be some very interesting times ahead. For anyone interested there are lots of pictures on my web site, taken on the test track, scroll to the bottom of the page & click on the keyword for 'High Marnham test track'.
Thanks again, regards Derek Wilson