During the Iron Wars dwarves participated a good bit? I assume the Ten Thousand Iron Dwarves came from not only Dwarf Mine but other locations surrounding?
Stone – a dwarf, Isidilian the Wise, Quicksilver Mostali whose primary contribution was his advice; and the judicious lending strange weapons. His representative was the dwarf named Arapan the Counter.
The Dwarf Army at Arapan’s Summons – full ten thousand of them as if from nowhere.
Would there not have been dwarven settlements, even just temporary ones where the 10,000 were stagged, possibly connected via tunnels under the Stormwalk Mountains?