Was in the area for a mtn bike race and rode/hike a biked up (50/50). I'd say the average grade is 15% with sections near the top around 20%. Good views from the summit, esp. to the SW. Most of the road is quite rough and loose but doable for anyone with good bike handling skills. Up in 1:30, down in 15 minutes.
I was looking for Ni laterites to analyze for Pt, Pd, Ir and Au. Carried a shovel, 4-lb hammer, mapping Brunton, and lots of other junk. I stayed at the house of a friend who lived on the S base of the mountain; I just walked out his back door to the old road (actually an active mine road at that time).
"After the first glass, you see things as you wish they were. After the second, you see things as they are not. Finally, you see things as they really are, which is the most horrible thing in the world."
--Oscar Wilde on Absinthe