The best directional drilling machine for drilling in mountains will depend on various factors such as the size and length of the borehole, the type of soil or rock formation being drilled, the available resources and infrastructure, and the specific requirements and operating conditions of the project. Some of the factors to consider when choosing a directional drilling machine for drilling in mountains may include:
Power and efficiency: The machine should have high torque and thrust/pullback capabilities to handle tough drilling conditions and provide efficient drilling performance.
Maneuverability: The machine should be compact and easy to maneuver in tight and challenging mountain terrain.
Durability and reliability: The machine should be built to withstand tough conditions and provide reliable performance over a long period of time.
Accessibility and transport: The machine should be highly transportable and easy to access in remote mountain locations.
User-friendly controls and operation: The machine should have a comfortable operator's cab and user-friendly controls to reduce operator fatigue and increase efficiency.
Based on these factors, the Vermeer D36x50 or the Ditch Witch JT3020 can be considered as strong options for drilling in mountains. However, it is recommended to thoroughly evaluate the specific requirements and conditions of your project before making a final purchasing decision.