Check out this cool *new technology for sandy, poor soils, (when driving footings/piling for new construction). Our new neighbors-to-be sent me their video of the installation. They said our honey honor cart helped them to decide to build on our road.
*heli coil
https://blossom.primal.net/a936f32cb756f6cd1192ca41fc2140259e13123849b5c997240af51551718caa.mov
