81. Which opening is primarily designed for haulage in underground metal mines?
82. What is the term for a horizontal underground opening made at the lowest level to drain water?
83. Which of these stoping methods involves leaving horizontal pillars to support the roof?
84. What is the key benefit of sublevel stoping?
85. What is a typical application of raise boring?
86. Which method involves ore fragmentation mainly by gravity?
87. Which underground transport equipment operates best on steep gradients?
88. What is the purpose of pre-splitting in underground development?
89. What does "face advance" refer to in tunneling?
90. In development headings, what is typically installed immediately after blasting and scaling?
Read More Section(Mine Development and Mining Methods)
Each Section contains maximum 100 MCQs question on Mine Development and Mining Methods. To get more questions visit other sections.