In a recent diversity action, the 6th U.S. Circuit Court of Appeals held that the “every exposure” theory is inconsistent with Kentucky’s “substantial factor” test for causation in asbestos cases.The case is Stallings v. Georgia-Pacific, Corp., et al.William Stallings, the original plaintiff, served in the Navy for four years, working aboard the destroyer USS Waller. Stallings worked daily on the ship’s valves, pumps, boilers and turbines, all while breathing in the asbestos-laced dust …