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Page Updated: June 22, 2022

Asbestos Exposure in Mining

Dave Foster Page Edited by Patient Advocate Dave Foster

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Fact Checked

This page has been fact checked by an experienced mesothelioma Patient Advocate. Sources of information are listed at the bottom of the article.

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We make every attempt to keep our information accurate and up-to-date.

Please Contact Us with any questions or comments.

Asbestos is a natural mineral extracted from the earth to make building materials and other products.[1] Miners face many risks on the job, but asbestos exposure in mining is sometimes overlooked. Regulations have even been set in place by the Mine Safety and Health Administration (MSHA) to protect workers, although, for many, this came too late.[2]

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Asbestos Mining

Asbestos has been mined from the earth for hundreds, possibly thousands, of years. People in ancient times recognized the unique properties of asbestos, including its strength and resistance to heat, fire, and chemical corrosion.

People have long valued asbestos as a material for fireproofing, insulation, and other types of construction and shipbuilding materials. To meet the demand for asbestos, asbestos mining was once a big business.

Mining for asbestos halted in the U.S. in 2002. Until the 1970s, asbestos was commonly used in the U.S.; however, increasing concerns about its health effects led to limitations and regulations, eventually phasing out asbestos mining.

The United States does not have an outright ban on asbestos. Plenty remains in materials and products; however, asbestos must be imported from other countries with active asbestos mines. Some of the largest countries for asbestos production are Russian, China, Brazil, and Kazakhstan.[3]

Long before experts realized the dangers of asbestos, the U.S. and Canada were two large mineral producers. At the industry’s peak, several asbestos mines operated in California, Oregon, Washington, Georgia, North Carolina, Virginia, and other states. The U.S. Geological Survey records over 900 sites in the U.S. where active mines were located.[4]

Miners Exposed in the Past at Risk Today

Asbestos mining may have ceased, but the damage has already been done for workers in those mines—decades after exposure and inhaling asbestos fibers, many miners developed illnesses like asbestosis and mesothelioma.

Those who continued working in asbestos mines through their closings in 2002 are still at risk of receiving a diagnosis. Mesothelioma has a long latency period, so past workers could still face illness in the future.[5]

The MSHA and Occupational Health and Safety Administration (OSHA) have both set standards for acceptable exposure levels. These standards have been in place since the 1970s, but workers continued to be exposed and risk becoming sick today.

Mining Asbestos Exposure Limitations

The U.S. Department of the Interior created the Mining Enforcement and Safety Administration (now MSHA) to protect mine workers. One concern was asbestos exposure, causing the agency to set an initial exposure limit in 1974. The limit set was only five asbestos fibers per cubic centimeter of air.

Two years later, the agency tightened that limitation to two fibers per cubic centimeter over an eight-hour period. In 2008, the agency lowered the acceptable asbestos exposure limit to 0.1 fibers.[6] This limit matches the limit set by OSHA and is applied to all underground and surface mines for metals, nonmetals, and coal.

Asbestos Exposure at Taconite Mines

All mining has the potential to expose workers to asbestos. Asbestos may be found in small quantities in many areas of the earth; therefore, it may be disturbed and contaminate air even in mines designed to excavate other minerals.

Taconite mining in Minnesota is an example of a non-asbestos mine that exposed workers to this dangerous mineral. Minnesota has numerous mines for taconite, a substance used to extract iron. A 2003 study found mesothelioma was more common in taconite mining regions than in other parts of the state.

Researchers also studied whether the miners affected developed mesothelioma from inhaling taconite dust or if they had been exposed to asbestos. It was discovered most of the sick miners were exposed to asbestos through commercial processing of taconite.[7]

Vermiculite Mining and Libby, Montana

Asbestos exposure is a danger in all types of mining; however, vermiculite mining is especially risky. Vermiculite is a group of minerals that often contain contaminating minerals, including asbestos. Vermiculite is used in insulation, fireproofing materials, growing material for plants, and various construction materials.[8]

For decades, a large vermiculite mine in Libby, Montana, was the major source of vermiculite in the United States. The mining site also had a deposit of asbestos. Libby vermiculite contained contaminating asbestos fibers.

The U.S. Environmental Protection Agency (EPA) eventually declared the area a Superfund site; however, this decision was not made until thousands of people were affected.

Miners and residents of nearby towns were infected by asbestos particles in the air, soil, and water. The situation was so problematic that in 2009, the EPA declared it the agency’s first designated public health emergency.[9]

Mining has always been a dangerous profession. There are many physical hazards; however, minerals in the ground can be inherently dangerous, like asbestos. If you were a miner and later developed an asbestos-related illness, you have a right to seek justice and compensation for your suffering. Consult a lawyer to help you seek compensation through a mesothelioma lawsuit or asbestos trust fund.

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Page Edited by Patient Advocate Dave Foster

Dave Foster

Dave has been a mesothelioma Patient Advocate for over 10 years. He consistently attends all major national and international mesothelioma meetings. In doing so, he is able to stay on top of the latest treatments, clinical trials, and research results. He also personally meets with mesothelioma patients and their families and connects them with the best medical specialists and legal representatives available.

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References
  1. Agency for Toxic Substances & Disease Registry. (2014, January 29). Asbestos Toxicity. Where is Asbestos Found?
    Retrieved from: https://www.atsdr.cdc.gov/csem/asbestos/where_is_asbestos_found.html
  2. Mine Safety and Health Administration. (n.d.). §56.5001, §56.5002.
    Retrieved from: https://www.govinfo.gov/content/pkg/CFR-2011-title30-vol1/pdf/CFR-2011-title30-vol1-part56-subpartD.pdf
  3. Stastista. (n.d.). Major Countries in Worldwide Asbestos Mine Production from 2010 to 2019.
    Retrieved from: https://www.statista.com/statistics/264923/world-mine-production-of-asbestos/
  4. U.S. Geological Survey. (n.d.). Asbestos Mines, Prospects, and Occurrences in the U.S.
    Retrieved from: https://mrdata.usgs.gov/asbestos/
  5. Reid, A., de Klerk, N.H., Magnani, C., Ferrante, D., Berry, G., Musk, A.W., and Merler, E. (2014). Mesothelioma Risk after 40 Years Since First Exposure to Asbestos: A Pooled Analysis. Thorax. 69, 842-50.
    Retrieved from: https://thorax.bmj.com/content/69/9/843.info
  6. Federal Register. (2008, February 29). Asbestos Exposure Limit.
    Retrieved from: https://www.federalregister.gov/documents/2008/02/29/E8-3828/asbestos-exposure-limit
  7. Hemphill, S. (2003, March 28). Do Taconite Fibers Cause Cancer? Minnesota Public Radio.
    Retrieved from: http://news.minnesota.publicradio.org/features/2003/04/01_hemphills_mesothelioma/
  8. U.S. Environmental Protection Agency. (2020, January 2). Protect Your Family from Asbestos – Contaminated Vermiculite Insulation.
    Retrieved from: https://www.epa.gov/asbestos/protect-your-family-asbestos-contaminated-vermiculite-insulation
  9. U.S. Environmental Protection Agency. (2009, June 17). EPA Announces Public Health Emergency in Libby, Montana; EPA to Move Aggressively on Cleanup and HHS to Assist Area Residents with Medical Care.
    Retrieved from: https://archive.epa.gov/epapages/newsroom_archive/newsreleases/0d16234d252c98f9852575d8005e63ac.html
View All References

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