Northwest went into bankruptcy, which caused Mesaba to go into bankruptcy as well. The furloughed a large number of pilots, as a result.
I interviewed with them a month ago. The currently operate a fleet of mostly Saab 340's with some CRJ-900's on the way. Pinnacle will be sending over some CRJ-200's in the fall. They intend to do a fair amount of hiring this year to staff up for the fleet expansion. There are a few Mesaba pilots that post on this board regularly, they should be along shortly to help you out. (RJ85FO is one of them.)