Fact Sheet - Minot, ND Former Robinson Insulation Company Plant Minot, North Dakota Site Background The former Robinson Insulation Company plant operated from 1945 through 1983. The plant, located at 826 Fourth Avenue NE in Minot, North Dakota, processed vermiculite mined in Libby, Montana. This vermiculite was contaminated with asbestos. The facility exfoliated ("popped" or expanded) vermiculite to manufacture insulation. Over 16,000 tons of vermiculite were processed at this site from 1967 through 1983.
In 1993, the Minot Parks Department purchased the property from Robinson Insulation. The Parks Department used the two former processing buildings to store equipment. Land use immediately surrounding the site is a mix of commercial, industrial, and residential. At one time, residences were located directly across the street from the east side of the processing buildings. These homes, however, have been demolished. Currently, the nearest homes lie approximately 175 yards south of the former processing buildings. According to the U.S. Census, over 9,400 people lived within one mile of the site in 1990. From June 2001 through April 2002, EPA collected hundreds of environmental samples at the site and at selected nearby locations . Results showed some residual Libby asbestos inside the former processing buildings, in soils at the site, and at several locations near the site. Under EPA supervision, the former processing buildings were torn down. Soils containing Libby asbestos were removed and replaced with clean fill. This cleanup was completed in December 2002. Conclusions and Recommendations Former Workers - Conclusion: People who worked at the Robinson Insulation facility were exposed to hazardous levels of asbestos. People who lived with former workers were probably also exposed to hazardous levels from fibers carried home on workers' hair and clothing. Before the cleanup, Minot City Parks Department workers may have been exposed to Libby asbestos as well, although this exposure would have been much less than for workers at Robinson Insulation
- Recommendation: Identify former Robinson Insulation workers and their household contacts (people who lived with them) to evaluate potential health effects. The evaluation should include current and former Minot City Parks Department workers who worked at the site before it was cleaned up.
Current Workers - Conclusion: Currently, the site poses no apparent public health hazard from asbestos.
- Recommendation: None. On-site exposure to Libby asbestos has been minimized because the site has been cleaned up.
Past Community - Conclusion: Not enough data are available to determine whether people who lived near the plant were exposed to hazardous levels of Libby asbestos. However, community exposures are likely to be have been low, especially compared to those of former workers, and are not likely to lead to adverse health effects.
- Recommendation: Review new information that becomes available to determine appropriate actions to protect public health.
Present Community - Conclusion: Community exposure to Libby asbestos from plant emissions or from onsite asbestos-contaminated materials poses no public health hazard. Currently not enough data are available to determine whether individuals are being exposed to Libby asbestos from waste that may have been used for a variety of purposes, such as fill, driveway surfacing, or soil amendments.
- Recommendation: Review new information that becomes available to determine appropriate actions to protect public health.
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