Clear the Mines

You get this quest from Foreman Tuef in Slave Mines, he wants you to get 10 Blare Spadix. Return with the spadix and he will ask you to blow up (put spadix on granite) all the Dense Granite in the mines. After you blow up the wall to High Archon Idris you can return to Tuef for your reward, a Iron Pick and 1,620,572,243 xp (at 47).