the development of highly complex processes for evaluating petroleum and mineral resources has fueled debates on the appropriateness of various assessment models and the data used to calibrate them. covering technical subjects and a range of analytical perspectives, this volume thoroughly discusses current progress in building quantitative models for resource assessment and explores the controversies that arise from data interpretation. among other topics, drew examines the ards ver. 4.01 used to support the 1995 national oil and gas assessment, geologic information on the value of undiscovered mineral resources in parcels of public land, and the deterministic paradigms of traditional geologists and statistical models applied by assessment analysts.