Yawn, easy. You know that giant fort in Frontier Mountains where you likely got a few levels in your late 20's-early 30's? Yeah, that's the place. Go in there, you'll likely get 1 or 2 giants on your ass as you go through the door, but they're cake at the higher levels. Anyways, kill anything that jumps you on the way in, and then you can pretty freely head to the mine shaft towards the back of the fort. Or if you're a complete wussy, go in invis. Stick to the walls on your way down to avoid agro from the giants down there. At the end of the shaft, there are two named giants, both are non-KoS. One of these is Mentrax Mountainbone. Give him the monocle and he'll give you back the ore. Easy.