How can I get into the locked storeroom by the north gate?

Been a while, but I believe I remember. There is a locked door in a basement area with an orc guard standing next to it. Pick the lock (the guard is apparently blind :) ) and inside is a key (among other things).

If memory serves me right, its near the shaman working area where you are tasked with finding some refined sulpher for the ranking shaman there.

Your memory was excellent. Thank you!