I didn't know that. The last time I heard they were mining more than ever. Moving it to road is not a good idea. They should be doing the opposite. Doesn't most of it get exported anyway? I would have though the link to Fowey was good enough and they could always reinstate the par docks link properly as access to the mainline isn't needed at all. Just blocks the road in Par for a while

(like when I was on the last railtour to the docks!)
Par docks used to have 2 links, the present one going under the arches. The Pinnock tunnel track to Fowey went under the 3rd Arch (looking from the Harbour). It used to be a busy level crossing (Par Bridge Signal Box) with the gates operated by a wheel.
The other was by Spit beach car park, and included many sidings by the main line. (Par Harbour Signal Box)
There was also another level crossing where Alfred crossed Par Moor Road to the Clay Dries. There is a low bridge, by the car park, hence the low cabs on Alfred & Judy. Now just a public footpath, and underdround clay pipes now use this bridge.
Not sure what the long term future holds for Par Harbour though, a Marina Village??
In the 70s there was a heavy train load to the 'Potteries' SOT at least 4 times a week.
Trains to Fowey ran as late as 7pm.
The Fowey branch bridge across the R.Fowey was removed in the seventies at Lostwithiel. The other main line bridges were renewed.
Trains now cross the level crossing to reverse to access the branch.