I Think Ben is talking about making one from scratch...
I did one many, many years ago, when it was first possible, might been back at TRS2004 days, but, as with most of my projects, it was more a proof of concept then a fully working model...
Mine is made as a head frame, and one of the troubles I had was as it got deeper, attaching tracks to it became very, very hard inside of Trainz... And being a lone miner back then, I sort of put it aside, waiting for better days, and more knowledge and so on...
I've used the same Principle to build an incline track, using a turntable control item to make it work better, also a work in slow progress (WISP)

In that incline there is some problems with the tracks meeting up, and I build my stuff by using X, Y, Z coordinates and 4 decimals behind the meter so taking in real down into tenth of a millimeter, so, there should be no problems with my model so it is a Trainz visual problem...
The mining Scene in Trainz been real low in interest for most people, the best I seen has been some stuff by lilb and I know some German larger coal mining stuff, so the extra puff behind (or kick...

) is not normally there either.
I got some last week, burned out on that ore car and now we're suppose to travel across Norway this week so all things are on hold on my end, again.
But, this thread is a good way to attract some attention and maybe more models pop up along the way... I can share the coordinates of my tunnels for those needing to match those for instance...
I suspect that with the New Era coming, things will change and unless they really mess it up, maybe it will be easier to make mining stuff also, next year will show I guess.
I just wish they could make a 5 meter Dig Hole work and not continue us to just keep the 10m hole, I hated that comment back when 5 meter grid was introduce that making a 5m Dig Hole would render all the 10 meter Dig Holes either useless or it would confuse people so they rather not doing it - as a comment from the Powers over Trainz said on the TS2009 Forum long gone...
Doing mining scenes, and a 10 meter hole is darn annoying to cover up and make good...
Anyway, back to the regular show, I'm of to bed at 0059 in the morning...!
Linda
Linda