Examveda The core (dia in mm) size obtained with NX size A. 21B. 28C. 40D. 54Answer: Option D This Question Belongs to Mining Engineering >> Coal Mining
The required water for 1 ton of sand in hydraulic sand stowing is . . . . . . . . A. 800 lB. 600 lC. 1100 lD. 1200 l View Answer
The purpose of pilot hole in stable pit drivage A. BlastingB. SupportingC. MuckingD. Ventilation View Answer
Scaffold not required in . . . . . . . . tubbing A. Over hung tubbyB. Under hungC. BrickD. Concrete View Answer
Join The Discussion