ABSTRACT
This research, which has taken part of the time of the author over a period of more than ten years, has been rewarding in the sense that insight has been gained in what turned out to be a complex problem. It is hoped that this work can be of assistance to the dredging contractors and consulting engineers involved in rock dredging contracts. Being aware of the geological factors involved in the mechanical excavation of rock is the most important notion that can benefit and improve the quality of site investigation reports.
