I DID NOT WRITE THIS –Almost Gaming DID -I am only sharing what I used to get my mining maxed out in about 8 hrs.
Mining 376-400 Cobalt / Rich Cobalt
Remember you must be at least 350 to start mining the regular cobalt nodes, the rich cobalt requires 375. You can actually take Rich Cobalt to 450 if you wanted to (just like Fel Iron in Hellfire Peninsula for TBC) but just to pretend like you need to go outside of the first zone in The Wrath of the Lich King to max your mining we will put up more zones and have you mine the other minerals. But keep in mind you do not have to leave these zones. The first map is for Howling Fjord, it's pretty simple to follow, just remember the lines that go over caves want you to follow the line from inside the cave and not outside.
http://i307.photobucket.com/albums/n...tMiningMap.jpg
Mining 376-400 Rich Cobalt in Zul'Drak
There will be more Rich Cobalt Nodes in Zul'Drak if you are interested in taking your skill beyond 400 on Rich Cobalt.
http://i307.photobucket.com/albums/n...tMiningMap.jpg
Mining 401-450 Saronite / Rich Saronite
You must be 425 to mine Rich Saraonite, you will find Titanium Veins along the way but you must be 450 to mine these. Sholazar Basin is a miner's heaven due to it's structure. This zone will probably be overcrowded when WOTLK first comes out so I've included a lot of different areas on this map you can farm. If you could get one of the Pillar's to yourself you could farm / kill mobs for exp while working mining up. Otherwise you can see that the main ridge around the zone is the hotspot, as well as, all of the pillars and streams/lakes connecting them
http://i307.photobucket.com/albums/n...niumMininM.jpg
Anyway I hope it helps someone...