Drilling And Blasting - Study Mode

[#421] There is no pressure drop between intake to return after installation of booster fan called . . . . . . . .
Correct Answer

(C) Neutral line

[#422] Stone dust barrier may fail of located within . . . . . . . .m of face or other potential source of ignition.
Correct Answer

(C) 40 - 60

[#423] Horizontal roadway parallel to strike of vein located either on footwall or hanging wall side.
Correct Answer

(B) Drive

[#424] Person are not permitted to travel on.
Correct Answer

(D) All of these

[#425] For measuring the area of roadway of irregular shape, a suitable device used called . . . . . . . .
Correct Answer

(D) Profilo meter