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British Columbia Mine Reclamation Symposium
Minimizing environmental impacts in rehabilitating small remote abandoned mine sites in Manitoba Priscu, C.; Aldea, C.-M.; Wong, W.K.; Dunham, D.; Lumley, B.
Abstract
One of the main requirements of rehabilitating an old mine site is to safely secure and cap mine openings to ensure public safety. For remote sites, current options (such as concrete caps) are less effective from an economic perspective, and are generally associated with important environmental impacts mainly related to construction of access roads and development of working areas. This paper presents a relatively novel approach for shaft capping which was implemented in Manitoba at a large number of orphaned and abandoned mine sites, using polyurethane foam as sealant for mine openings and workings, such as shafts, adits, exploration trenches, and steep excavations that pose a threat to public safety. The paper presents criteria used in establishing a safe sealant medium, and presents a summary of the laboratory testing completed to confirm material performance, its physical, structural, and chemical characteristics. The paper also provides a comparison between the use of this technology and the more traditional concrete capping option. For remote sites, the new technology is significantly more efficient. Several case studies from Manitoba are presented where the use of polyurethane foam proved to have minimal negative impact on the surrounding environment, the solution being less invasive and resulting in minimal ecosystem and ground disturbance. Recommendations for future uses and limitations of this technology are also provided.
Item Metadata
Title |
Minimizing environmental impacts in rehabilitating small remote abandoned mine sites in Manitoba
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Creator | |
Contributor | |
Date Issued |
2010
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Description |
One of the main requirements of rehabilitating an old mine site is to safely secure and cap mine openings
to ensure public safety. For remote sites, current options (such as concrete caps) are less effective from an
economic perspective, and are generally associated with important environmental impacts mainly related
to construction of access roads and development of working areas. This paper presents a relatively novel
approach for shaft capping which was implemented in Manitoba at a large number of orphaned and
abandoned mine sites, using polyurethane foam as sealant for mine openings and workings, such as
shafts, adits, exploration trenches, and steep excavations that pose a threat to public safety. The paper
presents criteria used in establishing a safe sealant medium, and presents a summary of the laboratory
testing completed to confirm material performance, its physical, structural, and chemical characteristics.
The paper also provides a comparison between the use of this technology and the more traditional
concrete capping option. For remote sites, the new technology is significantly more efficient. Several case
studies from Manitoba are presented where the use of polyurethane foam proved to have minimal
negative impact on the surrounding environment, the solution being less invasive and resulting in minimal ecosystem and ground disturbance. Recommendations for future uses and limitations of this technology
are also provided.
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Genre | |
Type | |
Language |
eng
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Date Available |
2010-12-08
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Provider |
Vancouver : University of British Columbia Library
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Rights |
Attribution-NonCommercial-NoDerivatives 4.0 International
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DOI |
10.14288/1.0042588
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URI | |
Affiliation | |
Peer Review Status |
Unreviewed
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Scholarly Level |
Unknown
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Copyright Holder |
British Columbia Technical and Research Committee on Reclamation
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Rights URI | |
Aggregated Source Repository |
DSpace
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Item Media
Item Citations and Data
Rights
Attribution-NonCommercial-NoDerivatives 4.0 International