内容简述: TITLE:ProximityDetectionSystemsforMobileMachinesinUndergroundMines
AGENCY:MineSafetyandHealthAdministration,Labor
ACTION:Proposedrule;reopeningthecommentperiod
SUMMARY:TheMineSafetyandHealthAdministration(MSHA)isreopeningtherulemakingrecordandrequestingad
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