WV Mine Foreman Test Questions and
Correct Answers
Question 1
What is the harmful gas in afterdamp?
Correct Answer
Carbon monoxide
Question 2
What are the main requirements of good timbers?
Correct Answer
That they are of proper length, straight grained, of sufficient cross-sectional area &
with the ends sawed square
Question 3
How often shall gas text examinations be made in face areas where equipment is
operating?
Correct Answer
At least every 20 minutes
Question 4
How long a period is arbitrarily set, after temporary seals are erected, before rescue
teams are permitted to return to the seals for investigation?
Correct Answer
72 hours or longer
Page 1 of 74
,Question 5
How close to a man-trip may a power trip be operated?
Correct Answer
Not less than five minutes apart
Question 6
What distance shall telephone wires be maintained from other power wires?
Correct Answer
12 inches
Question 7
Who is permitted to cross the longwall section face conveyor while it is in operation?
Correct Answer
No one
Question 8
What affect do short circuits have upon the quantity of air circulated, the fans speed
remaining constant?
Correct Answer
The quantity is increased
Question 9
When must the Director of MHST and the district mine inspector be notified of an
explosion, death, or serious personal injury?
Correct Answer
Immediately
Page 2 of 74
,Question 10
What is the percentage of Methane required for maximum explosive violence?
Correct Answer
10%
Question 11
What shall be done at the end of trolley & feeder wires?
Correct Answer
They shall be anchored securely & insulated
Question 12
What is the most dangerous roof?
Correct Answer
One which conceals slips & kettle bottoms
Question 13
What effect does the presence of Methane have upon the explosibility of coal dust?
Correct Answer
It is more easily ignited & the force of the explosion is greater
Question 14
What records of belt inspections are required to be kept?
Correct Answer
Records of daily inspections
Question 15
Who shall supervise the operation of man-trips?
Correct Answer
Foreman or other designated competent persons
Page 3 of 74
, Question 16
How may sudden changes in atmospheric pressure affect the monitor?
Correct Answer
It may cause temporary fluctuations in the oxygen reading
Question 17
What affect does splitting the air have upon mine resistance?
Correct Answer
The mine resistance will be decreased
Question 18
What quantity of explosives may be stored underground in magazines?
Correct Answer
No more than a 48 hour supply
Question 19
What factors determine the mine resistance?
Correct Answer
The area, perimeter & length of airways, the velocity & the coefficient of friction
Question 20
What is any substance emitted to the mine atmosphere from the exhaust port of the
combustion chamber of a diesel engine called?
Correct Answer
Exhaust emission
Question 21
What are the essential requirements of permanent fire seals?
Correct Answer
They should be as airtight as possible
Page 4 of 74
Correct Answers
Question 1
What is the harmful gas in afterdamp?
Correct Answer
Carbon monoxide
Question 2
What are the main requirements of good timbers?
Correct Answer
That they are of proper length, straight grained, of sufficient cross-sectional area &
with the ends sawed square
Question 3
How often shall gas text examinations be made in face areas where equipment is
operating?
Correct Answer
At least every 20 minutes
Question 4
How long a period is arbitrarily set, after temporary seals are erected, before rescue
teams are permitted to return to the seals for investigation?
Correct Answer
72 hours or longer
Page 1 of 74
,Question 5
How close to a man-trip may a power trip be operated?
Correct Answer
Not less than five minutes apart
Question 6
What distance shall telephone wires be maintained from other power wires?
Correct Answer
12 inches
Question 7
Who is permitted to cross the longwall section face conveyor while it is in operation?
Correct Answer
No one
Question 8
What affect do short circuits have upon the quantity of air circulated, the fans speed
remaining constant?
Correct Answer
The quantity is increased
Question 9
When must the Director of MHST and the district mine inspector be notified of an
explosion, death, or serious personal injury?
Correct Answer
Immediately
Page 2 of 74
,Question 10
What is the percentage of Methane required for maximum explosive violence?
Correct Answer
10%
Question 11
What shall be done at the end of trolley & feeder wires?
Correct Answer
They shall be anchored securely & insulated
Question 12
What is the most dangerous roof?
Correct Answer
One which conceals slips & kettle bottoms
Question 13
What effect does the presence of Methane have upon the explosibility of coal dust?
Correct Answer
It is more easily ignited & the force of the explosion is greater
Question 14
What records of belt inspections are required to be kept?
Correct Answer
Records of daily inspections
Question 15
Who shall supervise the operation of man-trips?
Correct Answer
Foreman or other designated competent persons
Page 3 of 74
, Question 16
How may sudden changes in atmospheric pressure affect the monitor?
Correct Answer
It may cause temporary fluctuations in the oxygen reading
Question 17
What affect does splitting the air have upon mine resistance?
Correct Answer
The mine resistance will be decreased
Question 18
What quantity of explosives may be stored underground in magazines?
Correct Answer
No more than a 48 hour supply
Question 19
What factors determine the mine resistance?
Correct Answer
The area, perimeter & length of airways, the velocity & the coefficient of friction
Question 20
What is any substance emitted to the mine atmosphere from the exhaust port of the
combustion chamber of a diesel engine called?
Correct Answer
Exhaust emission
Question 21
What are the essential requirements of permanent fire seals?
Correct Answer
They should be as airtight as possible
Page 4 of 74
