Here is some of the equipment. They use plows till it gets to deep. Check the pics on Flickr, just page newer or older arrows. They are clearing the road, which goes thru the ski area, to Artist point which is higher up in these pics.
http://www.flickr.com/photos/wsdot/2634543226/in/photostream/
http://www.flickr.com/photos/wsdot/2634543226/in/photostream/

