Lately I've been noticing that none of the 3 oz. bars in my area have had allergen warnings on them - previously it was only the baking bars that were safe in my area. I recalled that they were excellent at labeling, but I wanted to double check.
I purchased a milk bar (blech!) for DS, and called when I got home. They confirmed that if there is any chance of shared equipment, X-Contam of any kind it will be on the label. That goes for gluten as well, BTW - and this bar is labeled as gluten free.
They do have several different facilities, so always check the label.
Personally, I adore their 82%, but I know DS will love the milk one.
