Asbestos floor tiles were frequently utilized in the United States from the 1920s up to the 1960s. Floor tiles from that time are usually black or dark in color and may contain at least 70 percent asbestos. Asbestos does not become hazardous unless it breaks up into smaller pieces and spread out in the air. Inhaling asbestos particles may possibly result into lung cancer or mesothelioma, which is a cancer of the lining of the lungs, heart or abdomen. During the late 1980s, the U.S. Environmen...