41. Which term refers to the downward inclination of a vein or ore body?
42. What is the function of a muck bay?
43. What kind of ground support uses friction to hold the rock mass?
44. Raise excavation from bottom to top without blasting is called:
45. What defines the term "strike" in geology?
46. Which of the following methods is most suitable for soft, unconsolidated ground?
47. What is a boxhole in mining?
48. Which mining layout includes rooms and pillars of unmined ore?
49. Which drilling pattern is used in shaft sinking?
50. What is the primary purpose of a collar level in shaft development?
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