Senior economic geologist with over 28 years of experience in precious- and base-metal deposit evaluation, interpretation, and resource modeling. Advanced skills developed in the use of Vulcan, Minesight, and Datamine modeling software. Additional experienced in graphical applications, data handling, statistical, geologic modeling, and pit evaluation software. Apply effective techniques such as local-varying anisotropy (LVA) for directional mineral estimation to better leverage geologic controls on metal distribution in a deposit. Has long emphasized the importance of drilling and sampling data quality for use in mineral estimation.Worked for Barrick/Nevada Gold Mines, Queenstake Resources, Kinross Gold, Plexus Resources, and Sovereign Explorations at active mines, development projects, and site-evaluations across the U.S. and Canada and in Colombia, Zambia, and Bulgaria. A highlight in my career was leading a small team that successfully interpreted and modeled gold mineralization at the world-class Cortez Hills open-pit and underground complex in Nevada that became the basis for several years of +1 million oz/annum production.My career has been under-pinned by a classic geological background and I consider the understanding of geologic controls on mineralization and the appropriateness and quality of drilling data the most important aspects of effective resource block-modeling. This has drawn on a problem-solving and hypothesis-testing approach that developed in my graduate school research in the complex volcanic stratigraphy of the Challis volcanic field.I've worked with engineers to understand the implication of mining method with the affects of mineral zone geometry, dilution. and ore loss to help decide the final block size, zone boundary types, and estimation parameters for models that will more effectively reconcile with future production.