The West Ridge Route driving directions need to be updated. The short road connecting White Mt Ranch Rd to Jeffery Mine Cyn Rd is gated now. I had to continue up White Mt Ranch Rd to a fork(1.23 miles) with branches both heading west(downhill). Heading back west leads to hairpin turn just 0.4 miles from the fork. Now heading NE, it's 0.73 miles to Jeffrey Mine Cyn Rd.
Here's a gmaps pedometer link: http://www.gmap-pedometer.com/?r=5956349
I made it to the turnout at ~5,700', about 0.5 miles from the end of the road, driving a Honda CRV.
I wasn't sure if I was in the right canyon so I did not attempt to climb White Mt...even though I was right where I wanted to be.
I got to Hammil after dark. I took a short night hike to see what was beyond where I parked. I found the end of the road at 6,100'. There is a sign for the Champion Mine trail head. I walked up the trail about 1/4 mile and returned to my car. That lead to further confusion. I was hoping for some sign for the Black Eagle Camp or Jeffrey Mine Canyon. I was lucky to get the White Mt Ranch Rd sign.