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Historic day for Ontario miners and families exposed to McIntyre Powder

December 2, 2022 | Media Releases
Rows of people standing on the large staircase in the legislature. There are 7 people at the very front holding a banner with photos of various miners who were affected by McIntyre Powder. Text at the bottom of the banner says "Our hearts travel with you"

Toronto and Sudbury, Ont. – The Ontario government has officially apologized to tens of thousands of miners and their families for the government’s role in the sanctioned use of McIntyre Powder.

Between 1943 and 1979, Canadian workers in mining and other industrial workplaces were mandated to inhale an aluminum-based inhalant known as McIntyre Powder as a condition of employment. At the time, it was thought that inhaling the powder would protect the workers’ lungs.

In 2015, the McIntyre Powder Project was established by Janice Martell, whose father Jim Hobbs, was a former Steelworker and underground miner. Jim was required by his employer to inhale the aluminum dust prior to each of his shifts between 1978-1979. He was diagnosed with Parkinson’s disease in 2001.

“For the past many years, I have had the privilege of hearing miners’ stories and getting to know and love these workers and their families. This historic apology to the tens of thousands of mine workers who were subjected to aluminum dust inhalation, and to their families who watched them suffer, provides the acknowledgement needed for healing,” said Janice Martell.

In 2016, the McIntyre Powder Project began gathering evidence on the health of exposed miners. The project partnered with the USW, the Occupational Health Clinics for Ontario Workers (OHCOW) and the Office of the Worker Advisor (OWA) to seek out workers and families through “intake clinics” in Northern Ontario, which helped to confirm high rates of Parkinson’s disease, lung diseases, cancers and other diseases among the miners.

“The recognition of their wrongs and the long-waited apology from the government is justice for workers and their families. The Steelworkers union is committed to continue supporting and advocating for workers exposed to occupational illnesses and diseases,” said Myles Sullivan, USW District 6 Director (Ontario and Atlantic Canada).

In February 2022, the Ontario government announced Ontario’s Workplace Safety and Insurance Board (WSIB) will recognize Parkinson’s as an occupational disease linked to the use of McIntyre Powder in mining and other industries, and award compensation to former workers and surviving family members. It was a victory for the workers and their families, but especially for Martell who spent years trying to help her father secure workers’ compensation benefits through WSIB, without success.

Along with Martell, six former miners and 24 of their family members and USW members travelled from Sudbury to Queen’s Park in Toronto to hear the government’s apology.

The United Steelworkers union represents 225,000 members in nearly every economic sector across Canada and is the largest private-sector union in North America with 850,000 members in Canada, the United States and the Caribbean.

Each year, thousands of workers choose to join the USW because of our strong track record in creating healthier, safer and more respectful workplaces and negotiating better working conditions and fairer compensation – including good wages, benefits and pensions.

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Media Contact

Myles Sullivan, USW District 6 Director, 416-243-8792
Sylvia Boyce, USW District 6, Safety and Environment Co-ordinator,
Janice Hobbs Martell, Founder of McIntyre Powder Project, 705-849-5802,
Lorei Leigh De Los Reyes, USW Communications, 416-544-6009, @

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