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.
View document text
Posted On 10/18/2006
Document on Town Hall
|Explanation or Citations
|See MSHA Program Information Bulletin No. PIB P06-16.
This document applies to all boards for this agency
Back to showing guidance documents for this agency