Coal Mining - Study Mode

[#236] The tensile strength of C.I. pipes having
Correct Answer

(A) 15 kg/mm 2

[#237] The method employed, when surface buildings cannot be evacuated
Correct Answer

(C) Stowing

[#238] Strong roof and unyielding floor tends to
Correct Answer

(D) Crush the side of pillars

[#239] The width of rooms in room and pillar mining
Correct Answer

(D) 6 - 9 m

[#240] Among permitted and non permitted explosive, which type of explosive has highest consumption in India.
Correct Answer

(C) Slurry