This type of cancer type is most often caused by exposure to asbestos fibers, typically for many years. (cprlaw.com)
People working in particular industries in the last hundred years or so have been disproportionately affected by exposure to asbestos, and asbestos use became federally regulated beginning the 1970s. (getinjuryanswers.com)
Other forms of lung cancer may also be caused by exposure to asbestos. (monseesmayer.com)