A recent report on WDIO-DT and WIRT-DT ABC stations 10 and 13 says approximately 1,000 Iron Range miners and their families have been screened as part of an ongoing study into the link between taconite mining and mesothelioma. The study is being directed by the University of Minnesota and the Minnesota Department of Health, and funded by the Minnesota State Legislature, which allocated $4.9 million to the project in April 2008.

An investigation into the link between taconite mining – which takes place in what is known as Minnesota’s Iron Range – began when state health officials noted an unusually high incidence of mesothelioma occurring in taconite mine workers. Mesothelioma is traditionally linked only to asbestos exposure. There is a theory that the taconite mineral may contain similar fibers to asbestos mineral.

Researchers began screening workers and their immediate family members in July. According to the news report, researchers say the study is on track. They would like to see about another 1,000 people, however. Analysis of the respiratory is estimated to take another 18 months.

This screening is one part of the comprehensive five-year study. There are four health studies associated with the project, including a mortality study under the direction of the Minnesota Department of Health and related to miner deaths; a cancer rate incidence study; a respiratory health assessment for miners or former miners (and expanded to include spouses or other close family that may have had secondary exposure to taconite dust), and an occupational exposure study.


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Last year, we reported on the establishment of a mesothelioma research project in Minnesota, which is examining the possible link between taconite mining and mesothelioma. The five-year research program received $4.9 million in funding from the Minnesota state legislature in April 2008, and is being directed by the University of Minnesota in partnership with the Minnesota Department of Health.

This week, university researchers announced they are ready to begin recruiting current and former taconite workers on Minnesota’s Iron Range, and their spouses, to participate in a screening program.

Preliminary research actually began in Summer 2007, but got a boost from the legislature’s funding, allowing the study to expand significantly. The funding established the Minnesota Taconite Workers Lung Health Partnership task force.

There are four health studies associated with the project:
a motality study under the direction of the Minnesota Department of Health related to miner deathsa cancer rate incidence studya respiratory health assessment for miners or former minersan occupational exposure study
According to an update in the Star Tribune, which serves the Twin Cities, Minneapolis and St. Paul, “since last year, researchers have been collecting data they need to determine why Iron Range miners die from mesothelioma at higher rates than others.”

Researchers hope to recruit around 1,200 current and retired workers for the new screenings, plus about 800 of their spouses.

Mesothelioma has been linked exclusively to asbestos exposure, so this study seeks to determine what similarities may exist in the taconite mining industry and the taconite mineral that produce high incidences of mesothelioma among its workers.


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University of Minnesota researchers made a call in mid-September for more participants in its study of a possible link between Iron Range taconite mines and mesothelioma. The five-year reserach program received $4.9 million in funding from the Minnesota state legislature in April 2008, and is being directed by the university in partnership with the Minnesota Department of Health.

The study was conceived as a result of an unusually high incidence of mesothelioma in taconite mine workers. Mesothelioma is currently linked exclusively to asbestos exposure. To day, more than 58 Iron Range mine workers have been diagnosed with mesothelioma.

In July, researchers began health screenings of former taconite workers and their families. To date, a little more than 100 people have participated in the screenings, although reserachers hope to examine around 1,200 people during the course of the study.

The call for more participants apparently raised some concerns among area residents about the program’s success. However, a report by KQDS Fox 21 News assures the public that the study is progressing as planned, and that the call for more participants is a natural part of the process.

The news report quotes Nancy Tekautz, who is a field supervisor for the taconite workers respiratory health study, as saying her clinic is nearly booked. “We believe the response has been very good and we just want to encourage it to continue,” she told KQDS.

KXMB News reports study director Dr. Jeffrey Mandel has sent about 300 letters to a random sampling of current and former Iron Range taconite workers, asking them to participate in the study. Participants will provide a medical and occupational history and submit to simple medical tests.

Researchers assure miners and their families that all study participants and individual medical information will remain confidential. For more information, visit the Minnesota Taconite Workers Health Study web site, or call the University of Minnesota toll free at 1-888-840-7590.


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