This book is a record of the life work of a recently retired and decorated U.S. Geological Survey geologist, Donald A. Singer, who addresses a topic that is of primary interest and importance to mining and exploration companies, but also to many other decision makers, many of whom may not be directly connected to Earth sciences, e.g., land-use planners, investment bankers, and politicians.

The title is a little misleading as one may think that the book may be about a numerical approach to estimating the contained value of specific, already identified, and proven mineral resources, but it is rather about...

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