Drilling And Blasting - Study Mode
[#371] In degree III mines the rate of emission of gas m 3 /t of coal raised is . . . . . . . .
Correct Answer
(C) Above 10
[#372] If the deposit is at higher level than the general ground level, the access is by slightly raising roadway from grand level, known as . . . . . . . .
Correct Answer
(A) Adit
[#373] The type of drill rods used for coal drilling.
Correct Answer
(A) Diamond
[#374] Due to evoporation of moisture in upcast shaft, the dry bulb and wet bulb temperature upcast shaft will
Correct Answer
(B) Remain unchanged
[#375] Duration of BG-174 apparatus . . . . . . . . hrs.
Correct Answer
(C) 4