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MINING AND WORKING QUIZ

1. Coal is a ____________ formation





2. Of the given types of geoogical discontinuities and disturbances, ________ are most common in Indian coalfields?





3. RMR stands for ___________________.





4. Number of cutting drums in a SERDS is/are ________.





5. Who frames the Systematic Support Rules for an underground coal mine?





6. Of the given methods of work of underground mining of a coal seam in same geomining conditions, ________________ will cause maximum surface subsidence.





7. Which of the following equipment is most suited for side casting in opencast coal mines ?





8. The first opening cut in an opencast mine is known as ______________.





9. The powder factor in solid blasting in Indian underground coal mines vary from ____________.





10. Burnside drilling apparatus is used for _____________.





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