Bob this is not the report I was looking for but intersting all the same. Kind of have to slug through it but the search engine works pretty well and it explains the starts and stops of the various EMM/PEMM units in tables.

http://books.google.com/books?id=9asFAAAAQAAJ&pg=RA1-PA7-IA16&source=gbs_toc_r&cad=0_0#PPA1,M1

John R.