Grenzstadt

Grezstadt is an Imperial fortress-town that is located at the western end of Black Fire Pass, which commands lucrative trade traffic from traders moving through the Old Dwarf Road. Also ruled by a representative of the Elector Count, Grenzstadt is a center of the fur, gem, and metal trade, with a large guild market and warehouses within its walls. Not surprisingly, the town has a relatively large Dwarf population, perhaps ten percent in total. They act as trading agents for their clans and provide high quality services for those who can afford their prices.

Tavern gossips also says they keep watch on local activities, looking for those who plunder Dwarf property and try to smuggle it to the Empire. These same madman also claim this explains the recent disappearance of several miners who bragged of a "big new strike" in the hills.

Source

 * Sigmar's Heir (2nd Edition) -- pg. 46