Help Dulrig out couple of times, he'll eventually talk about how'd you gained those emerine stone that you showed to him prior, so make sure to have that in your pocket.
You get to mine some with him at the Golem's hideout..cave? After repeating that activity couple of times, he'll then give you the diacount.
Have you shown the Emerine Stone to Dulrig? You can mine them at the Golem's hideout which is located behind the mid left door of the Munbury cave complex. It's behind a wall and you need.. I think it was.. high perception?
He should be telling you about wanting to visit that hideout himself at around 15 likes or so. The 'Munbury Trip' is then available every 4 days btw.
