3M sued by veterans over military-grade earplugs

U.S. veterans have filed 11 lawsuits against 3M over their Combat Arms earplugs. According to the lawsuits, Aearo Technologies, the original manufacturer of the earplugs, knew the products were defective as early as 2000. Aearo, the lawsuits allege, falsified test results for the plugs and continued to sell them for over a decade.