A new lawsuit filed against two makers of butter flavoring for popcorn says 29 workers at a popcorn plant in southwest Missouri have been hurt by the flavoring. The lawsuit says the 29 people have suffered lung damage because of exposure to the products at the plant in Jasper. A previous series of lawsuits has produced awards ranging from $2.7-Million to $20-Million, as well as a series of secret out-of-court settlements.