The manufacturing industry consists of establishments engaged in the mechanical, physical, or chemical transformation of materials, substances, or components into new products. Generally, workers in the industry experience nonfatal injuries more frequently than all private sector workers combined, but they are fatally injured less frequently - 21 percent of occupational injuries and illnesses, but only 8 percent of at-work fatalities. On average, sprains and strains (35 percent) are the most common nature of injury for workers within the manufacturing industry; cuts and lacerations (12 percent), bruises and contusions (8 percent), and fractures (8 percent). The most frequently injured part of the body was the back (18 percent).