U.S. Department of Labor
Mine Safety and Health Administration
Protecting Miners' Safety and Health Since 1978
www.msha.gov
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Manufacturer
J. H. Fletcher & Company
Manufacturer
Model
Approval Number
Extension
Perm. Checklist
Drawing
J. H. Fletcher
& Company
DDR-D
31-134
-0
Power System
DM-44-A
Machine/Electrical
DM-125
J. H. Fletcher
& Company
U7-4-D
31-133
-0
Power System
DM-44-A
Machine/Electrical
DM-124
J. H. Fletcher
& Company
DR-D
31-127
-0
Power System
DM-44-A
Electrical System
DM-109
Machine
DM-108
J. H. Fletcher
& Company
HDR-D
31-94
-0
Power System
DM-29
Electrical System
DM-28
Machine
DM-27
J. H. Fletcher
& Company
DR-D
31-99
-0
Power System
Not Available Yet
Electrical System
Not Available Yet
Machine
DM-45
J. H. Fletcher
& Company
DR-D
31-108
-0
Power System
DM-69
Electrical System
DM-62
Machine
DM-61
J. H. Fletcher
& Company
KRD-D
31-91
-0
Power System
Not Available Yet
Electrical System
DM-39
Machine
Not Available Yet
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Mine Safety and Health Administration (MSHA)
1100 Wilson Boulevard, 21st Floor
Arlington, VA 22209-3939
Phone: (202) 693-9400
Fax-on-demand: (202) 693-9401
Technical (web) questions:
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MSHAhelpdesk@dol.gov
or call (877) 778-6055
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