41.
Given the following,
Machine Component
P. Dint header 1. Cowl
Q. Coal plough 2. Cutting chain
R. Road header 3. Loading apron
S. Shearer 4. Static set of bits

The correct match is

44.
The basic constituents of an emulsion explosive consist of oxidizers, fuels and surfactant with weight percentages of X, Y, Z respectively. Identify the correct relationship from the followings

45.
In longwall mining subsidence phenomenon, the "angle of break" is the angle between

47.
The layout of the pipelines for hydraulic stowing should be such that the hydraulic profile

49.
Depending on the decreasing ability of surrounding rock to store strain energy, the underground metal mining methods can be ordered as

50.
Why outlets from a mine are not provided closer than 13.5m?