User blog comment:D2r/Unanswered Questions of Redwall/@comment-1669318-20100125023610

15. I think it says in the book (Mattimeo) that Asmodeus dragged Chickenhound off to the quarry. Chickenhound regained conscioussness in his lair, and escaped.

4&2. There could be colonies of moles that mine metals.

12. I actually had a fanfic idea for this one