Three More ISP Workers Sue Respirator Companies Over Silica Exposure

ST. LOUIS, Mo. - Three more workers who claimed they were exposed to silica during the manufacture of roofing shingles at a plant owned by ISP Minerals have sued the makers of respiratory protection devices they wore while employed there. Risher v. 3M Co., et al., No. 08-01218; Midkiff v. 3M Co., et al., No. 08-01219(E.D. Mo.)

The complaints, filed Aug. 21 in U.S. District Court for the Eastern District of Missouri, name 3M Co. and Mine Safety Appliances Co. as defendants and accuse the companies of placing allegedly defective respirators and dust masks into the stream of commerce knowing …