To accompany the underground mine locos, I have uploaded a page containing one each of the HOf scale short and long mine hopper and log wagons. These are 6.5mm gauge, but by lengthening the axles appropriately they can be set for 9mm gauge (HOe). There is an optional backprint page to colour the insides.
The full page files of these wagons can be obtained from Sebastian Kiszka's site -
Galeria Kolei W±skotorowych - under the heading "Wozy górnicze"
Incidentally, all the models I have uploaded are on A4 PDF pages, at 300dpi.