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Q) Prior approval/permission from Chief Inspector/Director General of Mines Safety for use Drilling & Blasting and/or Heavy Earth Moving Machinery in opencast Mines is required to be taken under provisions of _____ Regulation of MMR 1961.

  • 3
  • 60
  • 106
  • 19
Solution

Q) Illumination in mines is measured in ____ Units of Measurement.

a) Lux 

b) Watts 

c) Brightness 

d) None of the above

Solution

Q) Mine Occupational disease known as “Noise Induced Hearing Loss” shall result due to prolonged exposure of a miner to the Noise level more than _____ dB(A).

  • 85
  • 90
  • 120
  • None of the above
Solution

Q) Angle of repose of waste material dumped is measured from _______.

  • Horizontal Line
  • Vertical Line
  • Surface of dump
  • None of the above
Solution

Q) Productivity of an Excavator in the mining is usually measured in ______

  • Idle time & Break down time
  • Cubic meters
  • Rate of Loading /Handling of material
  • Only working hours
Solution

Q) The height of embankment / bund provided all along the edge of bench in opencast working shall be not less than the height of ______.

  • 1 meter
  • 2.5 meters
  • Wheel of biggest Dumper
  • Any suitable height
Solution

Q) Basically rocks are divided into _____ types.

  • 2
  • 3
  • 5
  • 6 
Solution

Q) In Float or other similar deposit worked by manually on a sloping face, the face shall be benched and sides sloped at an angle of not more than ____ degrees from the horizontal axis in opencast mine workings.

  • 100
  • 90
  • 80
  • 6
Solution

Q) Searching for ore is called ________.

  • Mining
  • Prospecting
  • Exploitation
  • None of above
Solution

Q) Which Manufacturers should be encouraged to manufacture necessary equipment’s as per11th National Safety Conference?

  • OEM
  • Abroad
  • Local
  • Indigenous
  • All above
Solution

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