GEC Personnel


President and Chief Executive Officer

  • B.A., Geology, North Carolina State University, 1976
  • M.S., Mining Engineering, Virginia Polytechnic Institute and State University, 1993
  • B.S., Accounting, University of Charleston, 1996
  • Professional Engineer, No. 015474, State of West Virginia
  • Professional Engineer, No. 048963, Commonwealth of Virginia
  • Certified Professional Geologist, Commonwealth of Virginia, No. 116

John C. Bullock, P.E. & C.P.G., is President and Chief Executive Officer of Gaddy Engineering Company. As President, Mr. Bullock manages the geological engineering and financial analysis services of the firm. He has more than 32 years of experience in the fields of mine cost analysis, mine planning, mine development, environmental assessment, and natural resource evaluation. Mr. Bullock's duties with the company also include supervision of professional staff engaged in natural gas and silviculture activities

Before joining GEC, from 1993 to 2000, Mr. Bullock was Vice President of Pardee Resources Company, a land-holding company with offices in Charleston, West Virginia and Philadelphia, Pennsylvania. During his employment with Pardee, Mr. Bullock managed Appalachian operations. As Vice President of Pardee & Curtin Lumber Company, he negotiated and managed the harvest of large tracts of timber and directed the acquisition of several smaller land companies

From 1979 to 1991, Mr. Bullock was employed as a Project Geologist by Westmoreland Coal Company. He evaluated coal properties and mining operations and provided geo-technical support for mines in Virginia, Kentucky, and Colorado. These duties included production expansion, quality forecasts, contract mine liaison, regulatory compliance, and contract mine dispute resolution. In 1991, Mr. Bullock resigned from Westmoreland Coal Company to attend Virginia Tech's College of Engineering.

In 1978 and 1979, he worked as an Assistant Project Geologist for Consolidation Coal Company in Bluefield, West Virginia. His primary responsibility was to assist in various coal exploration programs in West Virginia and Virginia. The duties included interpretation of core samples and e-logs, correlation of coal seams, and preparation of coal seam thickness maps.


Theodore M. Streit, PE

Vice President of Operations

  • B.S. Electrical Engineering, University of Illinois, Urbana Champaign, 1975
  • Registered Professional Engineer, Petroleum, West Virginia.

Theodore M. Streit, Vice President of Operations, is responsible for the overall technical services of Gaddy Engineering Company and provides direct support for clients in the oil and gas sector. Mr. Streit has over 30 years experience in the oil and gas sector. Mr. Streit specializes in drilling and production technology, lease and contract negotiation and oil and gas mineral property valuations.

Dusta Tanner

Vice President

  • B.S., Business, West Virginia University of Parkersburg, 2006
  • American Institute of Banking - Various Certifications and Diplomas

Dusta Tanner is Vice President of Gaddy Engineering Company. As Vice President, she coordinates all day-to-day activities of various professional staff in the company and contributes to the findings and determinations of all projects.

Before joining GEC, from 1999 to 2009, Ms. Tanner was Human Resources Officer and Assistant Cashier of First Neighborhood Bank of Spencer, West Virginia. Her duties included all aspects of personnel administration and compliance with all regulatory agencies and banking laws, as well as preparation of accounting reports. A significant portion of Ms. Tanner's duties included communications with high wealth clients and shareholders of the Bank.