This fonds contains records related to the professional activities and personal life of Dr. Ernest Mastromatteo, occupational physician. The bulk of the material in this fonds documents his roles as a medical practitioner, researcher, and occupational health director. The series documenting the activities of the Nickel Producers’ Environmental Research Association, an association Dr. Mastromatteo was heavily involved in during the 1980s, is the largest, with smaller series documenting his career at Inco, his work with the American Conference of Governmental and Industrial Hygienists, and his many projects, case studies, organizations, associations and societies, as well as legal cases he provided testimony in. There is also a relatively large amount of material documenting his research in the form of addresses, and additional material chronicling his time as a student at both the University of Toronto Faculty of Medicine and the School of Hygiene.
Records include correspondence, notebooks, publications, drafts, prints, reports, meeting minutes and memoranda.