Loads of wonderful feedback, so thank you all.
Adam. Useful stuff about the wagons, and now you mention it W193W is indeed a long way from home.
Daddyman - thanks for confirming a B1. Duly changed as an edit to the info attached to the picture.
Thank you, Jim, for your thoughts and queries about the location. We know from earlier forays in to some of Tim's descriptions that there are errors here and there and this may well be another. Please post to the Caledonian Association to see if we can get a bit more info. As you know Tim's family are very jealous of copyright so please ensure it is credited to him - I don't have any doubt that you'll do so anyway.
Overseer - I'm aware of the Fort William association with aluminium so your proposal is very likely.
And Mick. I didn't realise the B1 was double headed but, once again, you are quite correct. I'll be adding that to an edit for the photo as well.
Rob - that's a good point. And Roja, many thanks for proposing the background to the B1 on the route.
I think that's covered all the latest stuff and thanks to you all once again.
We're still with 45115 but now on a train between Dalmelly and Connel Ferry on 12th September 1961.
Black 5 45389 on a freight leaving Connel Ferry on 12th September 1961. This was a Stirling loco from where it was withdrawn in October 1965. (SLS). It went to McLellans at Langloan where it was scrapped by the end of January 1966. (Rail UK).
Finally 57441, a McIntosh Class 711 on a freight in the station at Connel Ferry on 12th September 1961 with only two months to survive. The loco belonged to Forfar at the time from where it was withdrawn at the end of November 1961. (SLS). It went to McLellans at Coatbridge for disposal which was completed by the end of November 1962. (Rail UK).
Brian