( February 21, 2025, 7:56 AM EST) -- LOS ANGELES — A group of law firms has filed three identical lawsuits in state court against the makers of artificial stone products on behalf of workers who claim that they have developed silicosis from cutting and fabricating the products in question. In one case, which is indicative of all of the actions, Roberto Cruz Rivera contends that the defendants fraudulently concealed the toxic hazards of the stone products and hid the fact that inhaling silica causes lung disease....