Pre-Split & Controlled Blasting Techniques – DGMS Exam Notes Introduction In opencast mining, controlled blasting techniques such as pre-split, cushion, and line drilling are critical for maintaining slope stability, minimizing ground vibration, and preventing over-break. DGMS emphasizes these metho...

Cast Blast Design in Opencast Mines – DGMS Exam Notes Introduction 💣 Cast Blast Design & Burden Control – DGMS Exam Notes Cast blasting is a specialized technique used in opencast mines to move a large volume of overburden into the adjacent void by blasting energy — thus reducing the cost and time ...