In somewhat vain hopes of being 'still a work in progress' here is the latest track plan for the Cement / Quarry branch, which features a small terminus (enough room for a 141 with three cravens and a van) two loading sidings for ballast or cement, a depot, and headshunt.
Son no.1 insists it gets called "Manchester"... so be it!
I have the backscene in, quarry walls almost done, and 75% of thetrack down, platforms and station buildings built... now just to find a few hours to try finish it off!