IMPLEMENT FOR STABILIZING COHESIVE AND FRICTIONAL EARTHS TO A CONSIDERABLE DEPTH WITH BINDING AGENTS

摘要

A drill rod and head combination including a radially extending cylindrical sleeve of particular construction and specially shaped helical flight beneath the sleeve, whereby when unscrewing the drill head from the ground and feeding a binding agent through the sleeve, the binding agent will be transported radially outwards into intimate admixture with the earth.