SALEM, Ore. - A jury would have to conduct impermissible "guesswork" to arrive at the conclusion that a man suffered exposure to asbestos based on testimony that he used or purchased "some" asbestos products, an Oregon appeals court held April 10 in affirming motions to dismiss (Stephen Greer, personal representative of the estate of Russell Greer v. Ace Hardware Corp., Union Carbide Corp., and Georgia-Pacific Corp., Backstrom Builders Center and The Miller Lumber Co., Nos. 143981, A145112, Ore. App.; 2013 Ore. App. LEXIS 395).