41. The site selection conditions and other details of establishing a reserve station in a mine can be specified by
42. Preparatory stoppings also called as . . . . . . . .
43. CO produced by O2 absorbed the ratio is called . . . . . . . .
44. The weight of chemical oxygen breathing apparatus SAR-30.
45. Ascensional and homotropal ventilationis normally adopted to ventilate in inclined longwall face is
46. In this process, holes can be drilled from surface or underground working at any angle to the horizontal and used mainly for coring. The drilling process is called
47. The mine manager, on getting information of fire has to inform the . . . . . . . . and also near by . . . . . . . . station.
48. The coal drill run by the voltage of
49. The oxygen of the exhalaled breath is reused is called . . . . . . . . apparatus.
50. Alluvial mining is done in . . . . . . . .
Read More Section(Drilling and Blasting)
Each Section contains maximum 100 MCQs question on Drilling and Blasting. To get more questions visit other sections.
- Drilling and Blasting - Section 1
- Drilling and Blasting - Section 2
- Drilling and Blasting - Section 3
- Drilling and Blasting - Section 4
- Drilling and Blasting - Section 5
- Drilling and Blasting - Section 6
- Drilling and Blasting - Section 7
- Drilling and Blasting - Section 8
- Drilling and Blasting - Section 10