Guidance Document Information
||DM Operator Memorandum 06-07 Alternative Seal Designs
||Describes new requirements for gaining approval for alternative seal designs. Any seal design other than solid concrete block seals hitched into the ribs and floor must be submitted to MSHA for approval.
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Posted On 10/18/2006
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|Explanation or Citations
||See MSHA Program Information Bulletin No. PIB P06-16.
This document applies to all boards for this agency
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