Ground Control
How often should ground conditions be inspected?
At least once per shift.
How many hours of safety training are required for a new surface miner?
24 hours.
A shock involving as little as ________ volts can be fatal.
40 volts.
What is the required minimum PPE to work on an MSHA governed site?
Head protection, protective toe boots, and safety glasses.
This should be used prior to starting crushers or moving mobile equipment.
Audible alarm or warning.
What is the minimum distance to stay away from the top edge of the highwall?
At least 6 feet.
How often does an above ground mine get inspected by MSHA?
Twice a year.
According to MSHA regulations, all electrical repairs must be performed by?
A qualified electrician.
This is the training conducted at the mine site concerning the specific hazards associated with that particular site.
Site specific training.
Machinery, equipment, and _________ shall not be used beyond the design capacity intended by the manufacturer.
Tools.
If using boulders or blocks to berm off an area, what is the maximum size gap between each one?
No wider than the width of the smallest vehicle or equipment to travel at that location.
Part 46 are the MSHA rules governing what?
Surface mines and quarries.
What is the minimum distance you must keep all trucks, cranes and booms from any energized power lines?
10 feet.
Dual hearing protection is required at what TWA decibal?
105 dBA.
Guarding on bench grinders should cover how many degrees of the periphery of the wheel?
270 degrees.
What is the minimum size requirement for a berm?
Axle height of the largest piece of equipment on the mine site.
A miner must receive this type of training based on scope of work performed.
Task training.
LOTO stands for what?
Lock Out Tag Out
When is it acceptable to weld or apply heat to a wheel or rim?
Never.
_____________ & _____________ of grounding systems shall be tested immediately after installation, repair and modification; and annually thereafter.
Continuity and Resistance.
What is the required distance to work from the base of a highwall?
What is 33% or 1/3 of the height of the face of the highwall.
How often must miners receive REFRESHER training and what is the duration of this training?
Annually for 8 hours. (I know, it seems like a lot longer!)
What is the most dangerous path for current to pass through the human body?
The chest area.
This is a violation that is reasonably likely to result in a serious injury or illness.
Serious and Substantial or S&S.
Readily visible signs prohibiting __________ & _______ _______ shall be posted where a fire or explosion hazard exists.
Smoking and Open Flames.