You may want to have a look here http://forums.auran.com/trainz/showthread.php?87196-snow-fighting-equipment&p=992007#post992007
I just finished the Jordon Spreader, the original model. This is the older model. It was updated/rebuilt in 2011 but I haven't finished the updated model yet. In the updated model the engineer is able to control the engines from the cab of the flanger.
You're welcome and there's also a new tunnel I just made called the slide tunnel for charlielima that could be used for a snow shed as it has exterior and interior walls made of concrete. It was built for a slide area on the MBC 2010 route.