The Razor's Edge
Shagrok is the leader of the Grunrik clan of Goblins
The party encountered Shagrok and two humans from Temton in the caves above the Temple of Hope. The three humanoids were chained to a wall while a bunch of the Grunrik clan goblins slaved away in the caves mining gems.
The goblins, originally from the Lortmil Mountains, were enslaved by the Andruk’n Hobgoblins. The Hobgoblins, in turn, are being employed by the Klkbrug Orcs of the Pomarj to do various things. In this case, they are using the hobgoblins to mine gems to help pay for part of the war