By N K Daghestani, Limmer Quarries
This paper was first published in GE’s March 1970 issue
Large sites that have to be investigated in connection with urban development, highways or mineral potential pose the problem of obtaining clear and complete picture of the sub-surface at a reasonable cost. On such sites, both lateral and vertical variations in the substrata are usually encountered. When this is the case, a small number of borings will fail to provide full information, as variations can easily be overlooked. On the other hand, a large number of holes, poorly located, could produce the same erroneous results and add considerably to the cost of the project.