Mine seal with electrically non-conductive ties
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United States of America Patent
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May 21, 2013
Grant Date -
Nov 12, 2009
app pub date -
Feb 9, 2009
filing date -
May 12, 2008
priority date (Note) -
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Abstract
A mine seal comprising two spaced apart walls, at least one electrically non-conductive tie extending between the walls and holding them in place against forces tending to separate the walls, and a filler material filling the space between the walls. A form for making such a mine seal is also disclosed.
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Cited Art Landscape
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