As you approach from Ely heading south on US 93, watch for the county line sign signifying that you have just passed into Lincoln County. The Geyser Ranch is on the east side of the highway but almost immediate after passing the county line sign and the ranch is a dirt road on the west side of the road that leads up to the base of the mountains. Take this one. There is a gate that you will need to open AND close prior to proceeding very far. This road is another one that I wouldn't want to take my 2WD Honda Accord on as it is full of rocks that would love to greet my fuel tank but it is no problem for those with high clearance. You'll pass through one more gate in less than a quarter mile. You'll next cross a north south fence line that is a wildlife study Area boundary. At 1.8 miles go right at a junction and at 1.9 miles go left. The road is rough as you climb up to the base of the mountain. At about 4miles you'll see some mine ruins where there is decent camping (you pick the spot) at about 7600 feet. You've found the TH, kinda. On the linked topozone map you will see that you are in the Mill Creek drainage.
Richard Carey gave this description of the route he utilized:
"Hike west up the road to the first switchback where it turns left. From here leave the road and continue west into the canyon. There are some brushy areas, but not excessive. Stay near the south side of the stream and in spots there are signs of an old cattle route which is the clearest path in spite of many fallen logs. After about a mile the canyon narrows and you want to break out onto the slope heading west which has broad open areas. Head up the slope to the ridge and then north on talus to the cairn which is by the last pine tree before the summit. The cairn is actually about 44 meters too far north according to my GPS readings. The county line is closer to the end of the tree line where the open talus starts. This route is 4 miles round-trip with a gain of 3100 feet. It took us 4 hours for the ascent and about three hours back down. "
I had to agree with Richard's assessment of the cairn location, it is at least 120 feet too high which puts it in neighboring White Pine county. I GPS'd the cairn and it agreed, too high and off the mark. However, when you break out of the tree line and hit the talus, chances are you'll step on or close to the highest part of the county line as you go up through the talus. By all means, make the effort to do the summit of Mt. Grafton although it will add two miles to the round trip and more elevation to your effort.
Another helpful report on this route is Scott Casterlin's trip report which you can find HERE
I feel that this may be the shorter route of the two listed but I'd do the North Creek approach once again if given the choice. Its your call of course.
Summertime: take plenty of water, it gets hot here. Also do this early in the day to be off of the peak in case of thunderstorm activity.
Fall: Less water but be prepared for weather changes. Carry the 10 essentials and avoid doing this solo if possible.
Winter and Spring: I think it'd be doable but snow conditions would dictate your effort. Avalanche danger, perhaps. Carry crampons and ice axe and plenty of adequate clothing.
Above all, use common sense. This is an isolated area and there is no cell phone service. I managed to make cell phone contact from the top of Mt. Grafton but my cell phone has exceptional range (true and I have witnesses to verify that claim)
If you have information about this route that doesn't pertain to any of the other sections, please add it here.