David J. Lockwood

President and CEO

David Lockwood was appointed CEO of EnergySolutions in June 2012. Prior to joining EnergySolutions, Mr. Lockwood served as Chairman and CEO of Liberate Technologies (NYSE: LBRT), a provider of software and hardware to cable and satellite companies.

Prior to Liberate Technologies, Mr. Lockwood was CEO of Intertrust (NYSE: ITRU), a company that develops digital rights management software for the media industry.

Mr. Lockwood has also held positions in the financial services industry. He was a Managing Director at Goldman Sachs and a partner at Valueact Capital. Mr. Lockwood has served on the board of directors of a number of private and public companies as well as non-profit organizations. He has been a lecturer on the faculty of the Stanford Graduate School of Business, where he taught courses in corporate leadership, and was appointed to the board of USTAR, the Utah Science and Technology Research Initiative.

Mr. Lockwood holds a B.A. from Miami University (Ohio) and an MBA from the Graduate School of Business of the University of Chicago.

Kenneth W. Robuck

President of Disposal and Nuclear Decommissioning

Ken Robuck joined EnergySolutions in August 2013 and is President of the Company’s Disposal and Nuclear Decommissioning Division.  Mr. Robuck brings a wealth of experience and knowledge of the utilities industry and in developing and managing new areas and markets. Prior to joining EnergySolutions, Mr. Robuck was President of Williams Industrial Services Group, LLC, from 2006, where he was responsible for the management of a multi-regional, industrial construction and maintenance company, serving a broad customer base including petrochemical, steel, and power (both fossil and nuclear).

Mr. Robuck served as Vice President and General Manager of Alberici Constructors, Inc. from 2000 to 2005 and was responsible for the development and management of the Energy & Chemicals Division. From 1996-2000, he was the President of Williams Power Corporation, where he successfully led the Company’s revenue growth by diversifying into new areas and additional markets.

Mr. Robuck received his Civil Engineering degree from Auburn University.

Greg S. Wood

Executive Vice President and Chief Financial Officer

Greg Wood was appointed Executive Vice President and CFO of EnergySolutions in June 2012. He previously served as Executive Vice President and CFO for Actian Corporation, a provider of database and data analytics software. Prior to joining Actian, Mr. Wood held chief financial officer roles at numerous public and private companies, including Silicon Graphics, Liberate Technologies, and InterTrust Technologies.

Mr. Wood currently serves as a director of Steinway Musical Instruments, Inc. (NYSE: LVB), a manufacturer of musical instruments.

As a certified public accountant (inactive), Mr. Wood holds a B.B.A. in accounting from the University of San Diego and a J.D. from the University of San Francisco School of Law

John A. Christian

President, Logistics, Processing and Utility Support Services

John Christian came to EnergySolutions as part of the acquisition of BNG America and is President of the Company’s Logistics, Processing and Utility Support Services Division. Mr. Christian joined BNG America in 2000 and held various executive positions, including Chief Operating Officer from 2003-2006.

Between 1989-2000, Mr. Christian served in various executive positions within Rust International, OHM Corporation, and the IT Group, where he was responsible for projects involving large project management, decommissioning of nuclear facilities, nuclear waste management and waste treatment, site closure, and terminating radioactive materials licenses.

Mr. Christian was a commissioned officer in the U.S. Navy from 1979-1989 serving on nuclear submarines, where he was responsible for various areas of reactor operations, reactor refueling and overhaul, and submarine tactical operations.

Mr. Christian received a Bachelor of Science in Engineering degree from Duke University and a Master of Engineering degree from University of Florida.

Russell Workman

General Counsel and Corporate Secretary

Russ Workman was appointed as General Counsel in 2012. Prior to his appointment, Mr. Workman had 22 years of experience advising and representing U.S. and international companies in commercial transactions, litigation, and corporate governance.

Mr. Workman is licensed to practice in Utah and admitted to practice before the 10th Circuit Court of Appeals. He received a Juris Doctor degree from the University Of Utah College Of Law.

Brent H. Shimada

Senior Vice President of Human Resources

Brent Shimada, Senior Vice President Human Resources has been with EnergySolutions since July 2011.  Prior to joining EnergySolutions, he was Vice President Administration and General Counsel for Otix Global, Inc. (formerly Sonic Innovations, Inc.) (NYSE: OTIX), from October 2004.

Between May 1999 to October 2004, he was Human Resources Director for American Express’ Global Travelers Cheque Operations Group. Mr. Shimada served as Senior Corporate Counsel for grocery and drug retail conglomerate, American Stores Company, from 1996 to 1999.  He was Legal Counsel for Alliant Techsystems, Inc. (formerly Hercules Incorporated), a government contractor, from 1985 to 1996.

Mr. Shimada earned Bachelor’s (Finance), MBA and Juris Doctor degrees from the University of Utah.

John Sauger

Executive V.P. & CNO, Energy Solutions General Manager, Zion Station 

Mr. Sauger is responsible for all commercial D&D projects, including Zion Station in Ill. and the Lacrosse Boiling Water Reactor in Wisconsin. Mr. Sauger has more than 30 years of commercial nuclear experience covering the entire nuclear life cycle. John was the original decommissioning manager for the Maine Yankee project where he developed risk and project management systems, contract acquisition strategy, and led the first year of decommissioning execution.


Since 2013, John has led a fast‑paced transformation of the Zion Station decommissioning project such that Zion is the benchmark against which future decommissioning projects will be measured. As a utility executive, Sauger led the completion of the $5.2 billion refurbishment of the Bruce Nuclear Units 1 & 2 in Canada.  Working as a Senior V.P. for the Shaw Group, he directed the construction of non‑nuclear facilities in Afghanistan, Oman, and Italy. John developed the concept for the Inner Harbor Navigation Canal flood barrier in New Orleans as well as the reconstruction of numerous levees following hurricane Katrina. John is a graduate of Maine Maritime Academy in Castine, Maine and resides in Tennessee.

Jason Williams

Senior Vice President of Business Development for Logistics, Disposal, Processing, and Services

Jason Williams joined EnergySolutions in 2014 as Senior Vice President of Business Development for the Logistics, Disposal, Processing, and Services businesses. Mr. Williams and his team are responsible for business development activities supporting customers in all of EnergySolutions’ domestic and international market sectors, including nuclear utilities, government, and commercial.

Mr. Williams brings over 25 years of business development and technical experience supporting the energy industry by developing new businesses, projects, and initiatives to meet the changing demands of the industry. Prior to joining EnergySolutions, Mr. Williams worked for CB&I, Parsons Corporation, and Black & Veatch. With the Shaw Group (acquired by CB&I), he served as Vice President of the Power Sector supporting the nuclear, renewable, and fossil power generators.

Jason is a licensed Professional Engineer with a Bachelor of Science degree in Industrial Engineering and a Master of Science degree in Mechanical Engineering with a specialty in Nuclear Engineering from the University of Arkansas. He also holds a MBA from Washington University in St. Louis.

Jeffrey A. Willman

Senior Vice President, Radiation and Industrial Safety & Health

Jeff Willman joined EnergySolutions in August of 2015 as Senior Vice President of Radiation and Industrial Safety & Health. Prior to EnergySolutions, Mr. Willman was the Vice President of Environmental Health and Safety for Orica, the world’s largest manufacturer and end user of commercial explosives. His broad range of experience includes mining, heavy manufacturing, healthcare, nuclear, and explosives industries, giving him a unique perspective on effective safety and health management and systems.

With numerous certifications and 25 years of senior level safety management experience, Mr. Willman’s work in the safety field has been highlighted in multiple safety and health magazines and national news publications. He began his safety career while serving in the United States Marine Corps for 4th LAAD-Low Altitude Air Defense where he led a Stinger Missile Team.

Mr. Willman holds degrees in Occupational Safety & Health and Industrial Engineering Management from Jacksonville State University.

Jeff Hays

Senior Vice President Commercial Decommissioning

Jeff Hays is the Senior Vice President of Commercial Decommissioning for EnergySolutions.  Jeff is responsible for the overall development of EnergySolutions’ commercial nuclear plant decommissioning business and related products and services.  Jeff works across multiple EnergySolutions business groups and product lines to provide a full range of products and services to the emerging fleet of shutdown plants.

Jeff has over 30 years of commercial nuclear power experience in a broad range of technical, operational, and senior leadership / executive positions.  Previously, Jeff was the Vice President of Commercial Decommissioning for AREVA Inc. where he provided leadership in developing and executing AREVA’ D&D projects.  Prior to this, Jeff held various leadership, business development, and technical positions for AREVA and AREVA-Transnuclear including Vice President of Back End Fuel Cycle Solutions.  In this capacity, Jeff was responsible for the overall fabrication and delivery of Dry Fuel Storage systems and related products and services to North American customers.  Earlier in his commercial nuclear career, Jeff held senior leadership and technical operating positions at 2 operating nuclear stations.  Jeff is experienced in plant operations (SRO), chemistry, health physics, maintenance and project/outage management.

Jeff holds a Bachelor of Science degree in Nuclear Technology from Regents College, University of the State of New York and also held an SRO license at Diablo Canyon Units 1&2.

Joe Heckman

Vice President of Processing Operations

Joe Heckman joined EnergySolutions in September 1997 and is currently Vice President of Processing Operations.  He has held various management positions with EnergySolutions, including Operations Director of the Erwin ResinSolutions Facility and General Manager of Bear Creek Processing Operations.  Mr. Heckman began his career at EnergySolutions as a Radiation Safety Technician at the Clive facility. Prior to joining EnergySolutions, Mr. Heckman held radiation safety positions in commercial nuclear power plants, Department of Energy facilities, and environmental remediation sites. 

Mr. Heckman served in the United States Marine Corps as an infantryman from 1986 until 1992, including service in Operation Desert Shield/Desert Storm.

Mr. Heckman received a Bachelor of Science in Applied Science and Technology with a focus in Radiation Safety degree from Thomas Edison State College.

David Squires

General Manager of Operations for Clive Disposal Facility

David Squires is General Manager of the Clive Disposal Facility and has been with EnergySolutions since 2004. Mr. Squires is responsible for overseeing the operations at that facility, which includes a workforce of approximately 100 employees. Under his leadership, the Clive facility set an impressive safety record, having achieved more than 3 million man hours without a lost time accident.

During his 12 years with EnergySolutions, his roles have included Embankment Construction Manager, Project Manager, and Director of Operations. Mr. Squires has over 26 years of project and construction management experience for small and multimillion dollar projects, including positions at Corrosion Control Technologies and CH2M Hill Engineering.

Mike Lahr

Vice President of Logistics

Mike Lahr joined EnergySolutions in 2014 and has responsibility for Hittman Transport, MHF Logistics-ES Rail, the ES Cask Group and the Heritage Railroad, a short line railroad. Mr. Lahr brings over 30 years of experience in fleet operations and logistics. From 1999 to 2014, he was Director of Fleet and Logistics Operations for a publicly traded international and national auto parts company, managing over 6000 company trucks. Prior to that, Mr. Lahr had oversight responsibility for hauling a variety of hazardous materials and cryogenics at various fleets. In 2010, Mr. Lahr was named,“Fleet Executive of the Year” by Fleet Financials Magazine.

Mr. Lahr received his Business Administration degree from the Nebraska College of Business. He also studied Total Supply Chain Management at Penn State.