Excerpt from The Valuation of Mineral Property: Rules and Tables In the case of a mineral estate from which there is no immediate revenue, the engineer with a knowledge of the circumstances forms an estimate of the period which must elapse before revenue commences, and having fixed the probable annual revenue and its term, calculates the present value on the basis of a deferred annuity. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.