Mine Supports And Strata Control - Practice Test

(A) 0.05

(B) 0.1

(C) 0.5

(D) 0.25

(C) 0.5

(A) to keep immediate roof intact

(B) to resist coal bumps

(C) support requirement in other areas will be minimum

(D) help to roof to break

(D) help to roof to break

(A) 50 mm

(B) 60 mm

(C) 75 mm

(D) 90 mm

(C) 75 mm

(A) Goaf edges

(B) Junctions

(C) Depillaring areas

(D) Break line of goaf

Goaf edges

(A) Jharkhand

(B) Chhattisgarh

(C) Orissa

(D) Bihar

(A) Jharkhand

Mine Supports And Strata Control - Study Mode