A pathology expert witness for the defense opines on a case involving a ninety-year-old man who died from malignant mesothelioma. He also had been diagnosed with T-cell lymphoma after exhibiting distinctive symptoms of swelling nodes and night fevers. Through the course of his life, the decedent spent time in the U.S. Navy, worked as an iron worker for more than forty-years and was employed at industrial sites including power plants and steel factories. At two of the power stations, the decedent’s coworkers regularly worked with pumps that had gaskets or packings containing chrysotile asbestos. Following his death, the decedent’s family asserted claims for wrongful death and strict products liability against the manufacturer of the pumps. They allege the decedent’s exposure to the asbestos-containing pumps caused the fatal mesothelioma.