New hand drilling invention out performs any drill in history.
Russell Crawford
A winner of the Patents for Humanity Award of the USPTO, President R.C. Crawford Co. LLC dba One Million Wells (501c3)
There has never been a hand operated borehole drilling tool that can out perform this drill. This hand drilling tool is capable of drilling larger diameter boreholes better than any hand drilling method ever developed. It is capable of drilling large diameter gravel in alluvial materials better than any drill ever developed. It is the only hand drilling tool available that increases in efficiency as it drills deeper into the earth. It is the only hand drilling system that is capable of removing large gravel from great depths. While direct circulation drills wear out water pumps, this device has no water pump to wear out. This tool does not require drilling mud in most cases. A 2 inch diameter drill stem using this method only requires 4 cfm of air to drill a large diameter borehole. The 2 inch version of this drill is the lowest cost tool to drill boreholes in sand and clay. Please contact me at [email protected] for more information.
A winner of the Patents for Humanity Award of the USPTO, President R.C. Crawford Co. LLC dba One Million Wells (501c3)
5 年I hope in the future we can do some projects together
Docteur Agroéconomiste & Statisticien-Economiste, Expert-Consultant chargé de suivi-évaluation des résultats du HCR (RMS) au Mali
5 年All my congratulations and I deeply admire your drilling because water is the source of life and pillar of sustainable development. I am an Agroeconomist who has worked for more than 25 years as Monitoring and Evaluation Officer and as coordinator of Development Africa projects and programs. I have used a lot of auger (motorized as well as manual) drilling technology to enable thousands of women and men in rural Africa to obtain water for food security agriculture.