MADISON, Wis. - Denying in part a clothes dryer manufacturer's motion to exclude the testimony of the plaintiff insurers' expert witnesses, a Wisconsin federal magistrate judge on June 26 concluded that an arson expert and certified fire investigator was qualified to testify as to the purported defective designs of dryers that allegedly caused fires, while precluding his testimony related to the effectiveness of manufacturer warnings to consumers (American Family Mutual Insurance Co., et al. v. Electrolux Home Products Inc., No. 3:11-cv-00678, W.D. Wis.; 2014 U.S. Dist. LEXIS 86880).