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MSHA - Program Information Bulletins

PROGRAM INFORMATION BULLETIN NO. P07-27

This Program Information Bulletin (PIB) is to inform the mining community of a retrofit program for the calibration cup for the General Monitors Machine Mounted Methane Monitoring Systems listed in the table below. In addition, General Monitors added a verification ("bump test") to the calibration procedure to ensure the unit is properly calibrated.
 

PROGRAM INFORMATION BULLETIN NO. P07-24

The purpose of this bulletin is to increase awareness about the hazards of using portable, handheld roof drills (also known as "stoppers" or "jacklegs" and also commonly referenced by brand names such as the Gopher or the Wombat). MSHA encourages the use of roof bolting machines with Automated Temporary Roof Supports (ATRS) as described in 30 C.F.R. § 75.209(c)(1).