Mithril mining is one of the best mid-level gold makers in World of Warcraft. Mithril bars are needed for many crafting recipes and can be sold at auction for around 25 to 30 silver per bar. Considering that you can mine from 1 to 4 mithril ore from each mithril node, that means each and every node you find is worth almost 1 gold.
First on the list of best mithril mining spots is the cave at Drywhisker Gorge in the Arathi Highlands. It’s just east of Hammerfell at 82,36 (head up the hill to the right just off the main road into Hammerfell). This is my top choice because there are several mithiril nodes in close proximity along with iron nodes, three spawn points for chests, and mining nodes for Bloodstone Ore (see tip 5 in my WoW mining guide for how to make gold from Bloodstone Ore) .
In addition, the kobolds that inhabit this cave are relatively easy to kill even for someone in the low-thirties. I spent all my spare time mining this cave from 34 to 39 and, with the help of WoW Auctioneer, made a ton of gold in the process.
Next is the Badlands. Mountains ring the badlands and there are several mithril nodes scattered in the hills along the southern range. As long as no one else is farming, you should hit at least four mithril mining spots on every pass. They spawn every 10-15 minutes so you’ll be able to farm mithril ore pretty consistently here.
Searing Gorge is also one of the best mithril mining spots especially considering the route is fairly short and there are few mobs to bother you if you stay on the outskirts of the zone. Make a ring around the zone and you’ll find around three mithril nodes per trip.
The Hinterlands and Tanaris also have some good mithril mining spots but require a little higher level to farm so they don’t make this list of the best mithril mining spots.