Virginia Regulatory Town Hall
Department of Energy
Guidance Document Information
Title DM Operator Memorandum 06-07 Alternative Seal Designs
Document ID DM-M-06-07
Summary 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.
Effective Date 10/12/2006
pdf View document text     Posted On 10/18/2006                 Document on Town Hall
Explanation or Citations See MSHA Program Information Bulletin No. PIB P06-16.

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