From 1943 to 1980, some underground gold and uranium workers in Ontario were required to
inhale aluminum powder, up to approximately 30 minutes daily, for silicosis prevention.
This qualitative descriptive study explored the perceived impact of exposed workers to the
aluminum powder. Sixteen respondents from Northeastern Ontario participated in interviews
which were transcribed verbatim and analyzed thematically.
Themes that were constructed on a personal impact level included: 1) compulsory exposure, 2)
hesitancy to complain, 3) feelings of betrayal, and 4) concern about health impact and dying.
Themes on an organizational impact level included: 1) confidence and trust in company, 2) lack
of knowledge, and 3) need for compensation and formal apology.
Workers’ perceived that their long-term health was impacted by exposure on a personal and
organizational level. The latest information from this study on McIntyre powder will enhance the
knowledge within the occupational health and safety system.
