A typical underground drill rig including the rock drill studied in... | Download Scientific Diagram
![The one and only hydraulic rock drill that does not require an external air - 155-8 Nagabuse, Mishima, Shizuoka 411-0824, Japan - Maruzen Kogyo Co., Ltd. The one and only hydraulic rock drill that does not require an external air - 155-8 Nagabuse, Mishima, Shizuoka 411-0824, Japan - Maruzen Kogyo Co., Ltd.](https://img.directindustry.com/images_di/projects/images-g/maruzen-hydraulic-rock-drill-dh205-141102-17521994.jpg)
The one and only hydraulic rock drill that does not require an external air - 155-8 Nagabuse, Mishima, Shizuoka 411-0824, Japan - Maruzen Kogyo Co., Ltd.
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