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Mark Brennan

Chief Executive Officer & Co-Chairman 

Mr. Brennan is currently a founding partner and Executive Chairman of Ascendant Resources Inc. and Executive Chairman of Vanadium One Iron Corp., with over 30 years of financing and operating experience in the Americas and Europe. Mr. Brennan most recently served as President and CEO of Sierra Metals Inc., where he overhauled the corporate foundation and led a campaign to restructure the Yaricocha mine, a significant zinc-lead-silver-copper mine in Peru; he also oversaw the growth of the resource base and production at its Cusi and Bolivar mines in Mexico. Prior to that, Mr. Brennan served as President and CEO at Largo Resources Ltd., where he facilitated the acquisition of its flagship Maracas Vanadium Project in 2006 and advanced the project through a maiden resource, definitive feasibility, and completion of a $300 million financing, construction and first production.  Prior to Largo Resources Ltd., Mr. Brennan was a founder or founding member of several resource companies, including Desert Sun Mining, Brasoil Corporation, James Bay Resources, Morumbi Oil and Gas, and Admiral Bay Resources. Mr. Brennan began his professional career as an investment banker in London, England.


Cliff Hale-Sanders, MBA, CFA


Mr. Hale-Sanders is one of the founding partners in the formation of Ascendant Resources Inc.  Prior to this Mr. Hale-Sanders’  had a career that spanned over 20 years in the capital markets industry working as a leading base metals and bulk commodities research analyst in Canada working at RBC Capital Markets, TD Securities, CIBC World Markets and Cormark Securities. During this period, Mr. Hale-Sanders visited and reviewed numerous mining operations and corporate entities around the world. Mr. Hale-Sanders holds a B.Sc. in Geology and Chemistry, an MBA from McMaster University and is a CFA Charterholder.


Alonso Sotomayor, CPA, CA

Interim Chief Financial Officer

Mr. Sotomayor is a Chartered Professional Accountant (Ontario) with over 10 years of progressive financial reporting experience in the mining sector. Mr. Sotomayor started his career in a mining-specific role with accounting firm McGovern Hurley LLP, followed by progressively senior roles in the Toronto Mining Groups at KPMG LLP and Deloitte Canada overseeing files on numerous Canadian listed mining companies. Since 2017, Mr. Sotomayor has held the position of Corporate Controller of Ascendant Resources Inc., Chief Financial Officer of Vanadium One Iron Corp. since January 2020, and as Corporate Controller of the Company since March 2020. He holds a B.B.A. in Management and Accounting from the University of Toronto.


Kurt Menchen

Chief Operating Officer & Director

Mr. Menchen was formerly the President of Operations, Brazil, of Largo Resources Ltd, and has over 42 years of experience operating and managing mining projects, including over 20 years as General Manager at the Jacobina Gold project in Bahia State, Brazil. His prior experience also includes Anglo American's Vaal Reefs underground gold mine in South Africa and De Beers Diamonds in Angola. Mr. Menchen holds a degree in mining engineering from the Federal University of Rio Grande do Sul, Brazil.


Vice President, Exploration and Director

Mr. Campbell is an exploration geologist with over 40 years experience in mining and exploration industry through Canada, United States and Latin America. He most recently served as Vice President, Exploration for Largo Resources Ltd., a company he was involved with since its inception in 2003. Mr. Campbell has also worked with a number of major mining companies, most notably Noranda and Lac Minerals, and has held other senior management positions such as Vice President of Exploration for Apogee Minerals Ltd. Mr. Campbell holds a M.Sc. in geology from the Department of Earth Sciences, University of Western Ontario

Casper Groenewald

Vice President of Technical Services

Mr. Groenewald is a qualified metallurgist and has over 20 years of mineral processing experience in Africa and the Americas. He was the Senior Vice-President of DRA America and former Technical Director for Largo Resources where he led the commissioning and optimization of its Vanadium processing facility in Brazil. He is the former Operations director at Minopex, where he managed the operation of five diamond mines, and has also worked for Vantech (Xstrata’s Vanadium division), Highveld Steel and Vanadium Corporation.