Board Of Directors

  • Thomas Ullrich

    Chief Executive Officer, Director

    Mr. Ullrich has over 30 years of experience in mineral exploration and geoscience. Before joining Aston Bay in 2016, Mr. Ullrich was Chief Geologist North America for Antofagasta Minerals plc, investigating the region’s copper potential through extensive property evaluations and management of drill programs in Mexico and Canada. Prior to Antofagasta, he was Senior Geologist for Almaden Minerals, where he managed the drill program for the team’s discovery of the Ixtaca Ag-Au deposit in Mexico. Mr. Ullrich also established the Ar-Ar geochronology lab at the University of British Columbia and studied the Candelaria Cu-Au mine, Chile, while at Queen’s University. Mr. Ullrich is also Director at Aurania Resources.

  • Jessie Liu-Ernsting


    Ms. Liu-Ernsting has 20 years of experience in the mining industry, spanning capital projects engineering, debt capital markets, private equity and corporate strategy. She is currently VP, Investor Relations and Communications of G Mining Ventures Corp (TSX: GMIN). Previously, she held progressively senior roles in Corporate Development at Canada Nickel Company and Hudbay Minerals, responsible for formulating and executing on corporate strategy. Ms. Liu-Ernsting previously spent over five years at Resource Capital Funds, sourcing, evaluating, structuring, executing, and managing investments, gaining expertise in a wide range of commodities and mining services. Before RCF, she provided debt financing solutions in CIBC’s mining corporate credit group. Before CIBC, Ms. Liu-Ernsting’s experience at Hatch and Golder spanned all levels of mining and mineral processing operations design around the world and the development of mining innovation R&D projects. Jessie is currently a director of the Prospectors & Developers Association of Canada (PDAC) and FireFly Metals Ltd (ASX: FFM). Ms. Liu-Ernsting holds an MBA from the Schulich School of Business with specialisations in Mining, Finance and Strategy, and an Electrical Engineering degree from Queen’s University.

  • Jeff Wilson


    Jeffrey R. Wilson has over 25 years experience in the mining industry, having served as a director, officer and advisor of multiple public and private companies in the mineral exploration and mining investment industries. Mr. Wilson is currently President & CEO of Precipitate Gold Corp. Mr. Wilson began his career in the early 1990's a Corporate Communications Manager and eventual Director of Welcome Opportunities Ltd. (which was bought out by Endeavour Mining Capital in 2002) and Aquiline Resources Ltd. (which was bought out by Pan American Silver in 2009). In 2005, Mr. Wilson was involved in the formation of Silver Quest Resources Ltd., which was bought out in 2012 by New Gold Inc. Mr. Wilson brings a wealth of contacts throughout the investment community including institutional investors, retail brokers, investment bankers, mining analysts and private investors.

  • Gary O'Connor


    Gary O’Connor has over 40 years of diverse experience as a mineral exploration and development professional in the management of successful resource projects as well as the evaluation, technical due diligence, and supervision of large mineral exploration and development projects through-out various geologic settings and regions covering a variety of metals and minerals. Mr. O’Connor was recently CEO and President of Moneta Gold Inc. Previously he worked as Vice-President of Dundee Resources for 10 years, responsible for the technical due diligence of resource projects for investment purposes for the corporation and managed funds. In previous roles he worked as the Vice-President, Exploration of Gabriel Resources and European Goldfields in Romania, and as District Exploration Manager for Freeport-McMoRan Copper & Gold in Indonesia. While with Freeport Mr. O’Connor worked on the due diligence and discovery of a major gold fraud on the Busang gold “deposit” in Kalimantan by Bre-X. Mr. O’Connor graduated from the University of Auckland in 1982 with a degree in geology, geophysics and environmental studies, and is a Fellow of the Australasian Institute of Mining and Metallurgy, and a Fellow of the Society of Economic Geology.


  • Mark Pryor


    Mark J. Pryor is a geologist with a 40-year track record of successfully advancing multiple precious metal, copper, coal, REE and Li projects from discovery through to exploitation. He is currently Executive Vice President of the Exploration Division at The Electrum Group, based in Denver. Mr. Pryor has worked for majors (Anglo American, Placer Dome, Antofagasta) as well as various private and public companies in the Americas, Africa, FSU and Asia. He is the former CEO of Montero Mining & Exploration, COO of Edenville Energy and has held various senior and VP Exploration positions with companies such as Laurentian, Candente, Monarch Resources, Viceroy, Minefinders, Renholm and Amlib/Avesoro. Mark has headed multi-disciplinary teams in the discoveries of the following projects that have been mined, in operation and or at feasibility including: Svengali (Au – Anglo American/Cluff Minerals), Rodeo (Au – Monarch/Golden Minerals Corp.), San Sebastian (Ag/Au – Monarch/Hecla Mining Corp.), San Agustin (Au – Monarch/Argonaut Gold Inc.), El Compas (Ag – Monarch/Endeavour Silver), San Julian (Au/Ag – Monarch/Fresnillo plc.), La Pitarilla (Ag/Au – Monarch/Endeavour Silver), Canaima (Au - Monarch Resources/Hecla Mining.), Bochinche (Au - Monarch Resources), Kokoya (Au - Avesoro), Mkomolo/Namwele (Coal – Edenville Energy) and the Celaya Project (Ag/Au - Electrum). Mr. Pryor graduated from Aberdeen University in 1981 with a degree in Geology & Mineralogy and is a Fellow of the Geological Society, Fellow of the Society of Economic Geologist, a member of the Institute of Directors and QP under the South African Council for Natural Scientific Professions.