Goodeng Machine GMD80s Down-the-Hole Surface Drilling Rig Russian Susuman Gold Project
1.Geological conditions: gravel + sandstone + frozen soil gold deposit
2. Construction: Two shifts, 24-hour work system. Single shift 12 hours. Fastest drilling reached 126 holes (756 meters), approximately 1500 meters per day. Average daily efficiency: approximately 1000-1200 meters.