Underground Foreman (71-80)

In order to get 100%, you must answer all of the following correctly.

71. What is medium voltage?

Any voltage less than 1,000 volts
Any voltage more than 660 volts
From 661 to 1,000 volts
None of the above

72. What must be done before electrical changes are made to permissible equipment for use in a mine?

The manufacturer must be consulted
Such changes must be approved by the director
Nothing
The proposed changes must be reviewed by the department of commerce

73. How long must an apprentice miner work before testing for a certificate of competency and qualification as an experienced coal miner?

1 week
10 days
1 month
6 months with a minimum of 108 shifts

74. What is required prior to opening or reopening any coal mine in West Virginia?

A permit of approval from the director
A certificate of competency and solvency
A prospecting permit
Approval from the mine workers' union

75. Within what length of time must the occurrence of a life-threatening injury be reported in writing to the office of miners' health, safety and training?

Within 10 working days
Within 24 hours
Within 24 days
Within 10 months

76. How often must authorized representatives of the director review the effectiveness of approved roof control plans in West Virginia?

At least every 6 months
At least every 6 years
Weekly
Monthly

77. How far may a working place be advanced in by a projected crosscut on a remote controlled deep cut mining section prior to mining the crosscut through?

10 feet
20 feet
30 feet
50 feet

78. When are persons allowed to be located in by equipment being trammed or transported underground in the ventilating split passing over such equipment (other than ordinary sectional movements)?

Never
Sometimes
When at least 12 inches of clearance can be maintained between the equipment move and the energized trolley wire
Occasionally

79. How often must the mine foreman carefully read and countersign all fireboss reports?

Each shift
Daily
Weekly
Monthly

80. What minimum quantity of air is required to ventilate all working faces in a working section?

1,000 CFM
2,000 CFM
3,000 CFM
4,000 CFM

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•	Test No. 1 (1-10)
•	Test No. 2 (11-20)
•	Test No. 3 (21-30)
•	Test No. 4 (31-40)
•	Test No. 5 (41-50)
•	Test No. 6 (51-60)
•	Test No. 7 (61-70)
•	Test No. 8 (71-80)
•	Test No. 9 (81-90)
•	Test No. 10 (91-100)