McIntyre Powder update

To gain a better understanding of the relationship between the use of McIntyre Powder in Ontario mines and the development of neurological health outcomes in former miners, we engaged Dr. Paul Demers from the Occupational Cancer Research Centre (OCRC), based at Ontario Health (Cancer Care Ontario), to conduct an independent study in August 2017. 

By partnering with Dr. Demers, we were able to leverage anonymized historical information on thousands of former Ontario miners to examine the potential neurological effects of McIntyre Powder exposure on miners who were exposed to it. The results of this study, Investigation of Mcintyre Powder Exposure and Neurological Outcomes in the Mining Master File Cohort: Final Report (PDF), the largest ever conducted on this topic, are a valuable addition to the existing scientific literature* and will help us adjudicate related claims. 

The results indicate an association between Parkinson’s disease and McIntyre Powder. 

The study shows a statistically significant increased risk of Parkinson’s disease in McIntyre Powder-exposed miners compared to miners with no McIntyre Powder exposure. The study didn’t show an association between McIntyre Powder exposure and other neurological diseases, including Alzheimer’s disease and Motor Neuron Disease.

Many people have brought a lot of passion and energy to exploring the potential effects of McIntyre Powder and we appreciate everyone’s patience as we worked to better understand this issue and provide the answers they deserve.

*Read previous review of existing scientific evidence completed by Intrinsik researchers – summary (PDF) and full report (PDF)

Questions and answers

1.    What does this mean for people with WSIB claims related to McIntyre Powder who are waiting for a decision?

We are moving forward as quickly as possible to review each claim based on the relevant findings of the study and the individual merits of the claim so we can provide people with any compensation to which they may be entitled. 

2.    How will people be notified when a decision on their claim has been completed?

We will call the person who filed the claim, or their representative, to let them know the decision on their claim and follow-up with an explanation in writing.

3.    How do people know if they have a WSIB claim related to McIntyre Powder and if is going to be reviewed?

You need to have a WSIB claim number to be sure that your claim related to McIntyre Powder has been submitted. If you do not have a claim number, or are unsure if you have a claim,  please call us at 1-800-387-0750 and inform the telephone representative that you have questions about a McIntyre Powder claim. 

4.    My McIntyre Powder claim was previously denied. Can I have it reviewed again based on the results of this study?

Yes, if you would like us to reconsider a previously denied claim related to McIntyre Powder, please call us at 1-800-387-0750 and inform the telephone representative that you have questions about a McIntyre Powder claim.

5.    I am a former miner who was exposed to McIntyre Powder but I haven’t filed a claim yet; can I still file a claim?

Yes, please call us at 1-800-387-0750 or visit our website to file a new claim. New claims can be filed at any time.

6.    I am the next of kin of a deceased former miner who was exposed to McIntyre Powder. Will I be eligible to claim on behalf of the estate or as a dependant?

Each circumstance is unique. For more information, please call us at 1-800-387-0750 to speak to a WSIB representative. New claims can be filed at any time.

7.    What did the OCRC study examine?

The OCRC conducted the study using the anonymized historical records included in the Mining Master File (MMF) which has information on over 90,000 workers in the Ontario mining industry. These documents contain information about the miners’ work history including exposure to McIntyre Powder.

This study linked the MMF records to provincial health records to examine whether there was an increased risk of neurological disease outcomes in McIntyre Powder exposed Ontario miners compared to non-McIntyre Powder exposed miners and the general population.

For more details, see the full study: Investigation of Mcintyre Powder Exposure and Neurological Outcomes in the Mining Master File Cohort: Final Report (PDF)

8.    Who should I call if I have questions or concerns?

For more information, please call us at 1-800-387-0750 (Monday to Friday, from 7:30 a.m. to 5:00 p.m.) and inform the telephone representative that you have questions about a McIntyre Powder claim.