Obtain Sploder's Head.
If we could just stop the damned bombing from the goblins' creations we'd be able to launch a counter-offensive to take back Silverwind Refuge!
It's been my experience that goblins are either lazy and unproductive, or too productive and end up killing themselves with their own explosives. Unfortunately for us, they're being motivated by the brilliant Chief Bombgineer Sploder.
Get up to the Skunkworks on the west side of the refuge and don't come back until you have the Chief Bombgineer's head!