Cancers of the lung and nasal sinuses in nickel workers: a reassessment of the period of risk.

Abstract

Men (967) who were employed in a Ni refinery in South Wales on at least 2 occasions 5 yr or more apart before 1945 were followed-up, and the mortality rates from different causes related to the date of their 1st employment. Previous reports suggested that the occupational risks of lung and nasal sinus cancer were eliminated by 1925, but the risk persisted until 1930, which accords better with the temporal changes in the process.