Keep it Fresh
____________ the process of supplying sufficient fresh air to the U/G workings to achieve these purposes, ensuring proper distribution & use of the air, and controlling the return to surface of contaminated air.
Ventilation
Anyone that sees a loose rock hazard can use a scaling bar to remove it?
True/False
False
Air in active working areas shall contain at least what volume percent of oxygen?
A) 17.5
B)18.5
C) 19.5
D)21
C) 19.5
The blasting agent used the most for underground blasting.
ANFO (Ammonium Nitrate/Fuel Oil)
In an emergency, the primary escapeway must be followed out of the mine.
True/False
False
Air reading should be taken by a competent person after everyone starts their shift.
True or False
False (Before work begins)
Whites Creek currently uses a _____x_____ bolt pattern on level 2.
A)4x4
B)5X5
C)6X6
D)No Bolt Pattern
B)5x5
What gas has proven deadly to not only miners but to thousands of people in their homes also?
A) Oxygen
B) Nitric Oxide
C) carbon Dioxide
D) Carbon Monoxide
D) Carbon Monoxide
-Detonators must be separated from explosives or blasting agents by 4-inches of hardwood or equivalent, or a laminated partition.
True or False
True
The tag in/tag out system is used
A)before a blast
B)To know who is working underground
C) for attendance
D) A&B
D) A&B
Dry vegetation shall not be permitted within _____ feet of mine openings.
A)10
B)25
C)50
D)100
B)25
Scaling shall be performed from a location which will not expose persons to injury from _______ __________.
falling material
Headache, dizziness, and irritation of the eyes, nose, and throat could be caused from exposure to high concentrates of DPM
True or False
True
A green cone with a blue flashing light represents
A) heading is loaded
B) A heading is being loaded
C) A misfire
D) ALL the above
D) ALL the above
Who can enter an area that has been bermed off or posted with warning signs and coned off?
A)Blaster
B) Haul Truck Driver
C) Authorized Person
D) Anyone
C) Authorized Person
Air is measured as _______ _________ _________.
cubic feet per minute (CFM)
What should be done when there is an issue with the roof/ribs and you can not fix it yourself?
A) Notify your supervisor
B) Notify other miners of condition
C) leave area as found
D) Barricade the area
E) B&C
F) A,B &D
F)A,B,&D
A gas that is colorless, has a sweet taste and smells like rotten eggs. It causes paralysis of the respiratory system.
A) Nitrogen Dioxide C) Hydrogen Sulfide
B)Carbon Monoxide D) Oxygen
C) Hydrogen Sulfide
Day Boxes must be either ___________or _____________ when containing explosive materials
Locked or attended
____________means obstructed to prevent the passage of persons, vehicles, or flying materials
Barricaded
A written ventilation plan is required and must be updated at least __________ and submitted to MSHA
A) Every 30 days
B) Every Quarter
C) Every 6 Months
D) Annually
D) Annually
_____________ _____________ is a collective term given to the techniques that are used to regulate and prevent the collapse and/or failure of mine openings.
Ground Control
A miners personal exposure to DPMs must not exceed ______ micrograms per cubic meter of total carbon when measured as an 8 hour TWA.
A)120
B)160
C)240
D) 320
B)160
Magazines containing explosive materials must be located at least _____ feet from detonator storage facilities.
A)25
B)50
C)100
D)200
A)25
If a fire underground cannot be extinguished in ______ minutes of discovery, MSHA must be notified within _____ minutes
A)30-30
B)15-30
C)15-15
D)10-15
D)10-15