. mill operations were favorable compared with 2005 due to current-year improve- ments in machine performance , lower labor , chem- ical and energy consumption costs , as well as approximately $ 30 million of charges incurred in 2005 for machine shutdowns . u.s . coated papers net sales were $ 920 million in 2006 , $ 1.6 billion in 2005 and $ 1.4 billion in 2004 . operating profits in 2006 were 26% ( 26 % ) lower than in 2005 . a small operating loss was reported for the business in 2004