The aim of this book and the rationale behind writing it are twofold, and are born of experience in working in the field with geologists, builders, land- scapers, and people in the construction and building trades in general. This author, in his capacity as a geologist, air photo interpreter, and surveyor, has been asked to consult on very simple tasks that should be a part of the general knowledge of nearly everyone in the building trades. There is a definite and clear need for a short, simple, well-illustrated, and concise book that treats problems encountered every day by people in the...