On 24 Jan 2021, at 16:03, csipromo via groups.io <firstname.lastname@example.org> wrote:
Upon opening, all freight was authorised for the GBT as far as I’m aware.
Subsequently a problem arose with aggregate trains as the dust that they produce was causing following trains to overheat. Aggregate trains were, when I looked a few years ago, going over the mountain route. But there was only ever one or two a day in each direction.