List of top Mining Geology, Mine Development and Surveying Questions asked in GATE MN

The pit bottom in a correlation survey is shown in the figure. Points C and D represent two suspended wires. The bearing of line CD is 286°00'00'' and its length is 4.64 m. The angle CED is measured as 00°00'40''. The length of line DE is 5.46 m. Considering the Weisbach triangle method, the bearing of the line CE is 

With reference to the figure related to rock cutting by point attack tool, match the angle with corresponding name. 

In an analysis of fragmented blast muck, the mean fragment size is found to be 60 cm with uniformity index of 1.25. Considering Rosin-Ramler equation, the cumulative mass fraction, in percent, to pass the grizzly screen size of 100 cm is \(\underline{\hspace{1cm}}\). (round off to 2 decimal places)
For a dumpy level, the bubble tube has sensitivity of 40" for one division. While taking a staff reading at a distance of 60 m, the bubble is out of centre by 2 divisions. The error in staff reading in mm is \(\underline{\hspace{1cm}}\). (round off to one decimal place)
On an old plan of scale 1:1000, leasehold area of a mine is now measured as 802 cm^2 using a planimeter. The plan is found to have shrunk, such that the original line of 10 cm is now measured as 9.8 cm on the plan. True lease hold mine area, in m^2 is \(\underline{\hspace{2cm}}\) (round off to the nearest integer).
Folds are the structural features resulting from
In photogrammetry, the 'Tilt of a photograph' refers to the angle between the
NONEL is used as down-the-hole initiator to
Tricone roller bit is used with