Abstract
A computer program recently developed determines [Formula: see text] grades for hypothetical half‐foot thick layers that are assumed to comprise a uranium ore zone represented by a gamma‐ray log anomaly. First approximations of the grades of the half‐foot layers are made proportional to the gamma‐ray log deflections corrected for instrument dead time. The grades of the hypothetical half‐foot layers are then adjusted by an iterative process until a synthetic anomaly calculated from them converges with the real gamma‐ray log anomaly. When a good fit is obtained, the [Formula: see text] grades assigned to the hypothetical layers at that time are taken as the correct values. Advantages of the computer method over conventional “hand” methods include greater speed, lower cost, and more useful results.
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