WoW Silver Mining Guide

Silver is a rare node that often spawns in place of tin. You will most likely encounter silver veins while following the routes illustrated in the WoW Tin Mining Guide. These silver routes have worked best for me, if you have no success with these routes then using the tin mining routes will work instead. Please remember that silver is a rare resource and not easy to farm. To better your success at finding silver you will want to mine all the tin nodes while following these routes.
Where to Mine Silver in Arathi Highlands

Arathi Highlands: Levels 30-39



The kobold cave to the east of Hammerfall (Drywhisker Gorge) is one of the main focuses of this route. From the cave head south along the mountains and into the cave near Witherbark Village. Come out of the cave and head south then west along the mountain ridge and south again toward the ogre caves (in Boulderfist Hall). Go into the ogre caves, come back out and continue following the southern mountain ridge until you head west across the path. Across the path follow the southern mountain ridge again up until Stromgarde Keep where you will want to head due north toward another cave (Boulderfist Outpost). Once you have mined in this cave head north again to hit the northern mountain ridge and follow that mountain ridge back east to your starting point.
Where to Min Silver in Thousand Needles

Thousand Needles: Levels 24-35



This route is very similar to the Thousand Needles tin mining route. The major change in this path is that you will go through Highperch where I have found there to be more incidents of silver veins spawning. Follow the oval route on the north and south parts of the zone as far east as Freewind Post and as far west as the border of Feralas. If you are high enough level (30+) you may also follow the alternative dashed route into Shimmering Flats.
Where to Mine Silver in The Barrens

The Barrens: Levels 10-25



This route is much the same as the tin mining route for The Barrens. Focus on the higher level areas that are infested with enemies like the quillboar in the south (Blackthorn Ridge) and the harpies in the northwest (The Dry Hills). Also focus on Boulder Lode Mine in the northeast, and the Wailing Caverns area.
Where to Mine Silver in Hillsbrad Foothills

Hillsbrad Foothills: Levels 20-32



Once again, this route is similar to the tin mining route of Hillsbrad Foothills. Key areas of this route are the Dun Garok area in the southeast, the northern cave ridge line and the Yeti Cave, and the Azurelode Mine (make sure you go inside the mine and run the loop).
Where to Mine Silver in Badlands

Badlands: Levels 35-44



This zone isn't recommended for anyone who doesn't have a mount. It is a level 35-44 zone and is probably not optimal to mine silver in since it will be one of the important zones for mining mithril, iron, and gold later on, but it is an option for mining silver. The areas to focus on are the southern ridge, as well as the stand alone mountains in the center of the map. The route can be ran like a figure 8 either using the middle path of the route to run south across or north across, the center path can also be skipped altogether.
Where to Mine Silver in Duskwood

Duskwood: Levels 19-30



This route is similar to the tin mining route for Duskwood. The key focus areas are Roland's Doom in the southeast, Vul'Gol Ogre Mound (the ogre area in the southwest cave), and the entire southern mountain ridge.
Where to Mine Silver in Instances

The following instances are known to have silver veins: The Deadmines (15-20), Wailing Caverns (15-21), Uldaman (35-45), Blackfathom Deeps (20-27), and Razorfen Kraul (24-33).