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📜 SIMILAR VOLUMES
Six mining tremors (connected with rockbursts) from the Wujek coal mine area, with energies lo'-10' J, were chosen for investigation. All events caused serious and well documented damage in mining excavations and were felt on the Earth's surface. The mechanisms of these tremors were determined on th
Six mining tremors (connected with rockbursts) from the Wujek coal mine area, with energies lo'-10' J, were chosen for investigation. All events caused serious and well documented damage in mining excavations and were felt on the Earth's surface. The mechanisms of these tremors were determined on th
Accurate execution of any blast involves accurate blasthole drilling. In order to get proper blasting results, it is important that the bottom of the holes be at the proper location and that the drill enters the ground at the proper angle. It is also important to have the proper dimensions on the su