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Loong Yong, Ph. D.

Dr. Yong has B.S., M.S., and Ph.D. degrees in Nuclear Engineering with over 30 years of professional experience in the areas of radiological engineering, nuclear safety, nuclear and hazardous waste management, environmental remediation, and special nuclear materials disposition. He has worked extensively at U.S. DOE facilities across the US, as well as several commercial nuclear power plants. Additionally, Dr. Yong has served as a consultant to the U.S. Army Corps of Engineers and major corporations in the nuclear and environmental industries. He is currently a member of the Board of Directors for Waste Management Symposia and the Oak Ridge Civic Music Association, and he serves on the Board of Trustees for the Guitar Foundation of America. Loong was also named by Governor Bill Lee to the Tennessee Nuclear Energy Advisory Council.

Roger Hale
Sr. Vice President of Operations

Mr. Hale has an M.S. in Industrial Engineering and a B.S. in Mechanical Engineering from the University of Tennessee. His over 30 years of industry experience have mainly been focused on projects supported by the DOE. His areas of expertise include project management (including project controls), emergency management, nuclear operations, and safety analysis. In addition to DOE projects, Mr. Hale has managed Spectra Tech contracts associated with the Department of the Interior’s US Fish and Wildlife Service, the Centers for Disease Control and Prevention, and the Department of Labor.

Kimberly Moore
Director of Business Services

Ms. Moore has a B.A. in Business Administration with a concentration in accounting. She has worked in the accounting arena for almost 30 years and federal government contracting for over 10 years. She brings a broad range of experience across the spectrum of accounting, contract management, HR, benefits, project management, and supervision. Prior to joining Spectra Tech, Ms. Moore worked with Safety & Ecology Corp. as well as SAIC.

Mike Dunn, Ph.D.
Vice President of Nuclear Services

Dr. Dunn holds a Ph.D., M.S., and B.S. in Nuclear Engineering from the University of Tennessee. Dr. Dunn has over 30 years of nuclear engineering experience in the areas of nuclear criticality safety (NCS), radiation transport and cross-section processing methods development. Dr. Dunn worked at ORNL for 19 years, where he served as Group Leader for the Nuclear Data and Criticality Safety Group and the Nuclear Data Group. He was also the Acting Group Leader for the Reactor Analysis Group. Dr. Dunn additionally served as the Program Execution Manager and ORNL Task Manager for the U.S. Nuclear Criticality Safety Program (NCSP). Dr. Dunn is the primary author or co-author on more than 90 publications. He is a member of the American Nuclear Society (ANS), and he is a past board member of the ANS Oak Ridge/Knoxville Section.

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Chris A. Pickett
Director of Nonproliferation & Safeguards Services

Mr. Pickett holds M.S. and B.S. degrees in Electrical and Computer Engineering from the University of Tennessee as well as a B.S. in Physics from Bowling Green State University. Mr. Pickett has 40 years of operating knowledge and experience with many nuclear fuel cycle processes including weapon’s production. His research in tagging, sealing, and tracking technologies is internationally recognized by the IAEA and other nonproliferation communities.  Mr. Pickett is active in the European Safeguards Research and Development Agency (ESARDA) and the Institute of Nuclear Materials Management (INMM): where he served as president of the Central Region Chapter, Chair of the Charles E. Pietri Special Service Award subcommittee, a Member–at-Large, Chair of the MC&A Technical Division, and continues to serve as a member of the Technical Program Committee.  Mr. Pickett is a Fellow of INMM and recently served as the Institute’s Secretary (2009-2019).

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John M. Scaglione
Director of Nuclear Fuel Cycle Services

Mr. Scaglione has B.S. and M.E. in Nuclear Engineering from the University of Florida and nearly 30 years of experience. He is skilled in the development and use of computational methods for criticality safety, computational validation, radiation shielding, reactor analysis, and nuclear and radiological material transport security. He has particular expertise in leading, performing, documenting, and reviewing complex analyses related to spent fuel storage, transportation, and disposal for DOE-owned and commercial spent nuclear fuel (SNF) and high-level waste. He is a Six Sigma Yellow Belt and is the primary author or co-author on more than 50 publications. He is a member of the American Nuclear Society and the Institute of Nuclear Materials Management.

Joe Conger
Vice President of Business Development

Mr. Conger has a BA degree in Economics/Business Administration from the University of Tennessee and over 25 years of professional experience performing sales, recruiting, and business development. He has worked extensively with federal and commercial organizations, including the Department of Energy, to provide quality, experienced personnel in support of engineering, operations, technology, IT, power generation, construction, and D&D projects. He is an active member of ETEC and ETEBA, and he serves on the board of the West Knox Warriors Lacrosse Club.

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Brian Livingston
Manager of Business Development, IT

Mr. Livingston holds a BS in Management Information Systems from Tennessee Technological University. His almost 20 years of experience includes staffing and services for federal, state, and local governments as well as commercial clients. He served as Board of Directors for the Chattanooga Technology Council for 4 years and is currently a member with the Energy, Technology, and Environmental Business Association (ETEBA), a nonprofit business organization that supports the National Nuclear Security Administration and the Department of Energy.

Erik Vogeley
Vice President of Technical Services

Mr. Vogeley has an MBA from the University of Tennessee and a B.S. in Marketing from Indiana University of Pennsylvania. He has over 30 years of professional experience, both domestically and internationally. He has experience in the areas of radiation protection; HTRW; industrial hygiene; environmental safety and health; D&D; and waste management. Mr. Vogeley has managed contracts associated with the DOE, Canadian Nuclear Laboratories, a variety of universities, and numerous nuclear utilities. He is a past board member with the Energy, Technology and Environmental Business Association (ETEBA) and continues to actively support the organization.

Dan Varnum
Board Advisor

Mr. Varnum is a retired healthcare executive who spent his career leveraging his Industrial Engineering education to improve culture and processes throughout healthcare delivery. He holds an MBA from Drake University and a BS in Industrial Engineering from Iowa State University. Mr. Varnum previously served as President and CEO of an integrated healthcare delivery system with annual revenue of $500 million, 2400+ employees, and nearly 200 employed providers. He is the founder of Varnum Group LLC, where he pursues his passion of developing executive leaders to reach their full potential.  

Jim Gallagher
Board Advisor Emeritus

Mr. Gallagher is a visionary leader who has forged a career of successfully guiding businesses through times of fundamental change. After a highly successful 36-year career with Westinghouse, Jim retired in September 1999 as President of the Government and Environmental Services Company, a Westinghouse business unit that employed 17,500 employees at eleven major locations and managed $2.8 billion of federally funded programs. Jim is the founder of the Gallagher Consulting Group and currently provides innovative/strategic consultation to the commercial and government energy and environmental industry.


Our mission is to provide innovative and sustainable solutions for energy and environmental problems.


Spectra Tech will be a dynamic and innovative company providing engineering, environmental, and nuclear services and products to domestic and multinational clients. The company will be best known for high quality and efficiency.

  • Be honest in our personal and professional conduct

Good Stewards of Resources
  • Work Efficiently

  • Use the organization’s resources wisely

Quality Work
  • Measure our performance

  • Be responsible to clients and to each other

  • Keep an open mind for achieving the best results

  • Promote mutual trust

  • Reward associates fairly

  • Provide associates the tools to enable quality work

  • Have an open and honest communication

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