Management Team
Red Rock Biofuels has an experienced management team with a proven track record. RRB principals have developed, financed, constructed and/or operated 10 “first-gen” biofuels plants. These plants span five process technologies, with a total of over $650 million of construction cost and 390 million gallons of installed capacity. The RRB management team has a total of 50+ years of combined experience in the biofuels industry and an additional 40+ years in related industries.

  Terry Kulesa
Terry Kulesa is a co-founder and President of Red Rock Biofuels. Terry handles business development, team management and construction and operations services. He was previously VP of Operations for Pacific Ethanol, Inc, which he joined early in its development and was responsible for the design, construction and operation of five ethanol plants totaling over $500 million of construction and over $500 million of annual revenues. Prior to that, he was General Manager for Ace Ethanol, where he was involved in the development and construction and was responsible for company operations and P&L. He was General Manager for POET’s Ethanol 2000 plant where he led all company operations and was responsible for company P&L. Terry has over 23 years experience in managing operations. He also served on the Board of Directors for the Renewable Fuels Association and has held management positions with Kraft Foods and Borden. He holds a Bachelors Degree in Ag-Biosciences (Dairy Manufacturing) from South Dakota State University and an MBA from the University of Minnesota.

  Jeff Manternach
Jeff Manternach is a co-founder and CFO of Red Rock Biofuels. Jeff handles business development, financial modeling, industry valuations and project development services. Prior to Red Rock Biofuels, Jeff was the VP of Finance at Pacific Ethanol, Inc. As its first employee, he served many roles and participated heavily in its development. While there, Jeff lead debt capital raises of $400+ million, including a $325 million project finance deal in Feb 2007 that won Project Finance Magazine's Ethanol Deal of the Year Award. Prior to Pacific Ethanol, Jeff was a financial consultant at Pacific Resources and focused on controllership projects. Jeff received his MBA with distinction and an MS in Natural Resources from the University of Michigan and his BA in Economics and Physical Anthropology from Haverford College. An active member of his community, Jeff has served as treasurer for the Central California Lacrosse Club, Greater Fresno Area Chamber of Commerce and the San Joaquin Valley Clean Energy Organization. He currently resides in the Portland, OR area and is a member of the Entrepreneurs’ Organization - Portland.

  Jim Moore
Jim Moore is Director of Engineering of Red Rock Biofuels. Jim’s professional career spans over 30 years of construction, engineering & operations management with an emphasis on design/build projects for the process and manufacturing industries. He possesses a demonstrated record of success in managing the P&L for projects and multi-plant programs of over US$500M in capital value and teams up to 110 design engineering and 500 construction personnel for in house and client account design build projects in multiple industries. Jim also has extensive experience in renewable energy technology, and served as Senior Project Executive for a major US ethanol technology provider as well as Director of Engineering and Construction at Pacific Ethanol, Inc., where he managed design/build efforts on four greenfield ethanol plants. Jim has a B.S. in Mechanical Engineering from Texas A&M University. He spent almost two years in Europe, working in Belgium, Germany, France, Switzerland, and Spain.

  Joe Winckler
Joe Winckler is Director of Operations of Red Rock Biofuels. Joe leads onsite construction management, plant evaluation, plant repair and plant operations work for clients. He was previously the GM of Operations at Pacific Ethanol, Inc., where he was responsible for development, construction and operations of five ethanol production plants totaling $500+ million of construction cost and $500+ million of annual revenues. Joe had management responsibility for over 120 employees, including the plants’ production managers, lab managers and commodity managers. Prior to Pacific Ethanol, Joe was the Plant Manager at Ace Ethanol and Ethanol 2000, where he was heavily involved in its development, construction and operations of each facility. Joe started his ethanol career at the first POET plant in 1993. Joe is a graduate of the Graduate US Army Non-Commissioned Officers Academy (Korea) and the Graduate Process Safety Management School (Louisville, KY).

  Mary Dinh
Mary Dinh is Project Manager at Red Rock Biofuels. Mary’s work experience encompasses both engineering and project management. Prior to Red Rock Biofuels, Mary was a Development Engineer at UC Santa Barbara’s Mechanical Engineering Dept., where she was responsible for the design, development, and management of undergraduate lab courses and advising student design projects. Her technical experience also includes R&D of medical devices at Guidant Corporation. Mary has extensive international experience working with rural communities. While at UCSB, she founded the student chapter of Engineers Without Borders-USA and led teams of students and professionals in design and implementation of appropriate technologies in rural Peru for 8 years, including clean water systems and clean cookstoves. She has also taught high school physics in Ghana and spent time in Haiti working with non-profits and Haitian farmers to improve farmer livelihoods and incentivize reforestation. Mary has a BS. and MS. in Mechanical Engineering from Purdue University and UC Berkeley, respectively, and an MBA from Colorado State University's Global Social & Sustainable Enterprise (GSSE) program.


  Sue Primsky

Sue is Red Rock Biofuels’ Accountant & Office Manager. Prior to moving to Colorado, Sue worked in various financial and accounting capacities in both headquarters and plant operations.  She was a Financial Analyst for the CFO at the Diocese of Bridgeport (CT) responsible for managing the accounting and allocation of self-insurance programs. Prior to joining the Diocese, Sue was the Sr. Accountant for the Corporate Controller of Roller Bearing Company of America (RBC).  Responsibilities included inter-company reconciliations between 16 divisions working with field and corporate finance personnel for resolution of outstanding issues. She prepared, reviewed and analyzed the Divisional P&L and Balance Sheets, Consolidated Statements of Cash, Revenues, Disbursements and Capital Expenditures for the 16 divisions. Sue started her career in Accounting and Finance with the IBM Corporation where she spent 11 years in multiple locations and divisions including managing a staff of 20 accountants in their Corporate Vendor Accounting Operations. Sue has an MBA in Financial Management from Pace University, New York and a BS in Accounting and Economics from the State University of New York.  

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