A. first row of supports should contain at least one strategically placed cog
B. two rows of vertical props
C. two rows of cross-bars
D. bolts of lrn × lm mesh
Answer: Option A
This Question Belongs to Mining Engineering >> Mine Rules And Regulations
Which of the following services is recommended as special department?
A. sanitation services
B. recreational services
C. welfare services
D. occupational health services
What action would be taken as per DGMS Circular for immediate support of slips and weak planes?
A. put props as required at the place
B. set roof bolts at 3 × 3 mesh
C. place shall be temporarily supported followed by permanent supports
D. place shall be supported permanent supports before engaging persons to work
While choosing mutually exclusive projects which type of project gets priority for selection?
A. project with largest negative value
B. project with largest positive value
C. project with good cash flow
D. project with cumulative cash flow with negative and positive number
A. 3 + 0.25%
B. 5 + 0.25%
C. 7 + 0.25%
D. 9 + 0.25%
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