Tower Hill Mines (US) LLC is an indirect subsidiary of International Tower Hill Mines Ltd and manages exploration and project review activities.


Thomas Irwin
Chief Executive Officer and President

Tom IrwinMr. Irwin has over 40 years' experience in the natural resource industry constructing, optimizing, operating and permitting major mining projects with companies such as Amax Gold and Kinross and most recently was Vice President for ITH.

Prior to joining ITH, Mr. Irwin served for six years as the Commissioner of the Alaska Department of Natural Resources. As Commissioner, part of his responsibilities included close communication and negotiation with major companies and management of Alaska oil, gas and mining resources, which annually produce several billion dollars of revenue for the State.

Previously, Mr. Irwin held senior positions at the Fort Knox mine located 45 miles southeast of the Livengood project. From 1992 to 1996 Mr. Irwin was Vice-President of Fairbanks Gold Mining, Inc., a Subsidiary of AMAX Gold Inc., responsible for engineering at Fort Knox during project design and permitting. From 1996 to 1999 he was Operations Manager responsible for mine start-up and operation and General Manager of the mine from 1999 to 2001. Following these positions he became the Vice President, Business Development for Fairbanks Gold Mining Inc., then a subsidiary of Kinross Gold Corp. Prior to his work in Alaska, Mr. Irwin was General Manager of AMAX Gold's Sleeper Mine in Nevada and manager of AMAX's Climax mine in Colorado. Mr. Irwin has a degree in Mineral Engineering-Chemistry from the Colorado School of Mines.


Marla K. Ritchie
Corporate Secretary

Marla RitchieMs. Ritchie brings over 20 years experience in public markets working as an Administrator and Corporate Secretary specializing in resource based mineral exploration companies to the Company. Since 2001, she has worked as Corporate Secretary for Cardero Resource Corp. and is currently also the Corporate Secretary for Corvus Gold Inc., Trevali Mining Corporation and Wealth Minerals. Between 1992 -- 2003, Ms. Ritchie worked for Ascot Resources Ltd, Brett Resources Inc, Golden Band Resources Inc, Hyder Gold Inc., Leicester Diamond Mines Ltd., Loki Gold Corporation, Oliver Gold Corporation and Solomon Resources Limited.


Karl L. Hanneman
Chief Operating Officer

Karl HannemanMr. Hanneman was appointed to the position of Chief Operating Officer on March 26, 2015 and was most recently the General Manager for the Company.  Mr. Hanneman has been with the Company since May 2010, during which time he was responsible for assembling the Alaska team and served as the Livengood Gold Project Manager. 

Mr. Hanneman has more than 30 years of Alaska-based mining industry experience including 12 years for Teck where he served as Alaska Regional Manager throughout the period of underground exploration, feasibility study, project design, and permitting at Pogo and then as Director, Corporate Affairs, Alaska for Teck, serving as the senior corporate representative in Alaska supporting both the Red Dog and Pogo Mines. 

Mr. Hanneman has led or participated in a number of industry and State of Alaska sponsored organizations, including: Alaska Minerals Commission, Council of Alaska Producers, Resource Development Council and the Alaska Miners Association and Fairbanks Chamber of Commerce.  Mr. Hanneman serves as a director of Usibelli Coal Mine, Inc., a private company with an operating coal mine in Alaska, and Northrim BanCorp, Inc., a public bank holding company engaged in commercial banking in Alaska.  Mr. Hanneman has a B.S. Degree in Mining Engineering, magna cum laude, from the University of Alaska. 


David A. Cross, CPA
Chief Financial Officer

Mr. Cross’ past experience consists of officer, director and senior management positions, including five years at Davidson & Company LLP Chartered Accountants where he spent time as a Manager, a member of their Technical Accounting Committee and a member of their IFRS Committee.  He is also the CFO of several other junior mineral exploration companies.  Mr. Cross holds a BCIT diploma in Financial Management and is a Chartered Professional Accountant and Certified General Accountant.

2011 International Tower Hill Mines Ltd. Gold Mining Exploration Company.
All Rights Reserved