Blast design and vibration control at an underground metal mine for the safety of surface structures

• The ore of Kayad underground Pb-Zn mine contains 10.61% Zn, 1.61% Pb and 33 ppm Ag.
• The mining is being carried out by sublevel open stoping method.
• The Kayad village is only 100 m horizontally away from the underground mining areas.
• In total 1203 blasts from development face, slot raise and ring were conducted and 2612 vibration data were monitored.
• Precious mineral is being exploited from underground mines with the help of optimised blast design without any damage to surface structures.