Small rotary machines
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A whole range of small drilling machines exist which can be towed by a car or built on the back of a pick-up, generally in the price range of US$ 5,000 – US$ 10,000. Most of these machines are limited to rotary jetting and percussion (in the same way as the percussion gouge). The bigger machines and down-the-hole hammer systems are generally a lot more expensive (US$ 10,000).
Manuals, videos, and links
- PAT-Drill - Engine powered drilling equipment and small machines – http://www.pat-drill.com
- Lone Star Bit - Engine powered drilling equipment and small machines - http://www.lonestarbit.com
- Deep Rock - Engine powered drilling equipment and small machines- http://www.deeprock.com
- Drillingfab - Engine powered drilling equipment and small machines - http://www.drillingfab.com