From WoWWiki

The Jangolode Mine was one of the key sources in Westfall of minerals for Stormwind. Now the Defias Brotherhood has taken over the mine. Since the soldiers of Stormwind are busy fighting the Horde, they do not have enough soldiers available to dislodge the Defias.

Subzones of Westfall
Alexston Farmstead • The Dagger Hills • The Dead Acre • Demont's Place • The Dust Plains • Furlbrow's Pumpkin Patch • Gold Coast Quarry • Jangolode Mine • The Jansen Stead • Klaven's Tower • Longshore • The Molsen Farm • Moonbrook • Moonbrook Schoolhouse • Saldean's Farm • Sentinel Hill • Sentinel Tower • Stendel's Pond • Westfall Lighthouse