via Google Maps - How To Drive From Wall St. To Star Lake, SK
I could only get as far as Star Lake, SK on mapping a drive from Wall St., but there are no turn-offs after the lake, you get straight to the mill from there.
If you are Hank Paulson, and you have been meaning to take a drive up North on your Harley-Davidson to Northern Saskatchewan and back after a drive of several days, then you might consider dropping by the Jolu Mill. You can also fly there in a Pilatus PC-6 and land directly on the ore stockpile.
I would recommend landing on one of the unused roads, however.
I would also go in August, since there would be less bugs than in spring.
http://goo.gl/maps/ZvaFi
-F6