Split Mountain tunneling jumbos have a special modular design for accurate, fast face drilling for straight holes or mechanized long-hole drilling and bolting for cavern excavation, while ensuring high productivity and reliability. Our two-boom, three-boom electro-hydraulic jumbos, w/o console, could drill holes with a diameter of 45 to 64 millimeters with a depth of up to 6.1 meters (20 feet)in high-quality tunneling excavation of 12-180 m² cross sections.