An internal company letter from MF, stating that ~500 recall letters were mailed via Fedex.
My guess is that only 1/3 of the 500 furloughs will accept the recall, i.e. approximately 170. I don't see near-term attrition increasing by more than 15/month for a while, as many of the more aggressive and competitive have already left over the previous 6 months. So again a very rough approximation @ 15/month would have everyone offered recall by the end of 2011.

Welcome back, now you can relieve me from my involuntarily displaced domicile on this Christ forsaken atoll in the Pacific.