Carbo Ceramics



Our Team

Don Conkle

President & Chief Executive Officer

Mr. Conkle serves as the President and Chief Executive Officer. He joined CARBO in October 2012 as Vice President, Marketing & Sales and assumed his current role in July 2020. Prior to CARBO, Mr Conkle joined Schlumberger in 1986 and served in numerous engineering and management roles including Vice President & General Manager, US Central and Northeastern Operations, Vice President Fracturing & Stimulation and Vice President & General Manager, Qatar and Yemen. Mr. Conkle received his Bachelor of Science in Petroleum Engineering from Marietta College in 1986.

Shannon Nelson

Vice President Manufacturing & Distribution

Shannon Nelson joined the Company in 2002 and was appointed Vice President of Manufacturing and Distribution in 2018 after serving as Senior Managing Director of Sand Operations and Supply Chain, and Director of Distribution.  With 25 years of experience in operations, Mr. Nelson has led teams covering Environmental, Health & Safety (EHS), customer service, production planning, domestic & international supply chain management, and quality assurance.  Prior to joining the Company, Mr. Nelson served in various operational positions including: Division Manager with Total Logistics, Manufacturing Team Leader with New Holland Manufacturing, and Production and Transportation Manager with Evans Clay.  

Mark Thomas

Vice President Finance

Mr. Thomas currently serves as the Vice President of Finance at CARBO.  He joined the company in May 2010 and has held various positions, including finance, accounting, investor relations and corporate development roles.  Previously, Mr. Thomas joined Simmons & Company International in 2007, an energy investment bank, as an Equity Research Analyst.  Prior to Simmons & Company International, Mr. Thomas served as a Technical Professional designing electrical systems for offshore platforms at Mustang Engineering, a Wood Group company. Mr. Thomas received his Bachelor of Science in Electrical Engineering from Texas A&M University and holds a MBA from the University of Houston.  Mr. Thomas is a Certified Public Accountant in the State of Texas, a CFA® charterholder and is a registered Professional Engineer in the State of Texas.

Terry Palisch

Vice President Technology & Engineering

Terry Palisch joined the Company in 2004 and was appointed Vice President of Technology & Engineering in 2020.  He previously held positions with the Company including Global Engineering Advisor.  Prior to joining the Company, Mr. Palisch joined ARCO Alaska and ARCO International in various roles including Reservoir, Operations and New Ventures Engineering in Alaska, and as an Engineering Advisor in Algeria.  Mr. Palisch received his Bachelor of Science degree in Petroleum Engineering from the University of Missouri – Rolla (now Missouri S&T) in 1986.

Rich Thurston

Vice President Asset Guard

Rich Thurston joined the Company in 2011 and was appointed Vice President of Asset Guard Products & Falcon Technologies and Services in July of 2020.  He previously held positions with the Company as General Manager, Director of Manufacturing & U.S. Industrial Business Development and Manufacturing Manager.  Prior to joining the Company, Rich served in various positions including Plant Manager with The Scotts Miracle-Gro Company and Production Supervisor with Guardian Industries.  Rich received a Bachelor of Science in Manufacturing Engineering Technology from Brigham Young University.    

Max Nikolaev

Vice President Energy

Max Nikolaev joined the Company in 2020 as Vice President, Energy, after working for 15 years for Schlumberger. Max is a seasoned intra- and entrepreneur and has gained multiple functions and leadership roles during his career. Max has MSc in Petroleum Engineer, MSc in People Management, and is receiving his Global Executive MBA from TRIUM (a joint program between New York Stern Business School, London School of Economics, and HEC in Paris).

Shelly Rosen

Director Marketing

Ms. Rosen serves as the Director of Marketing.  She joined CARBO in August 2009 as the Executive Assistant to the President & CEO. Prior to joining the Company she had experience as a small business owner, website disigner, and roles working within the IT Industry. Ms. Rosen holds a MBA in Computer Information Systems and a B.A. in Marketing from Houston Baptist University.

Utpal Ganguly

Senior Vice President Enterprise Digital Innovation & Sustainability

Mr. Ganguly serves as the Senior Vice President of Enterprise Digital Innovation & Sustainability.  He joined CARBO in February 2022. 

Tim Kriegshauser

Vice President Business Development

Tim Kriegshauser (MBA/CPA), VP Business Development, has a diverse background in business leadership roles.  Starting out in business as a CPA in public accounting, and migrating to industry as Division Controller/CFO positions.  He has also served in VP and Managing Director roles on a national level within the packaging and graphics industry.  In 2006 Tim joined BBL Falcon to oversee the commercial development of the start-up venture which he and his partners later sold to CARBO in October 2009.  When joining CARBO in 2009, as the General Manager, Tim lead the integration of Falcon Technologies and Services (formerly BBL Falcon), and in 2013 transferred into CARBO’s Sand business unit where he lead all business development activity on a National and International level.  Starting in 2020, Tim assumed the role as VP Business Development with the mission to build synergy between all business entities within the oil and gas activities at CARBO and other Wilks Brothers organizations.  Throughout his tenure at CARBO Tim has successfully developed long term supply agreements and new technology product introductions in all primary business platforms within CARBO, including, agriculture, foundry, oil/gas, FracPro, tolling and AssetGuard. 

Our Businesses



A leading provider of high-performance ceramic media and industrial technologies engineered to increase process efficiency, improve end-product quality and reduce operating costs.



Oil & gas environmental services that deliver engineered spill prevention, control and countermeasure (SPCC) solutions for wellsites, production facilities or other environmental applications.






Innovative products to protect your equipment and the environment in a variety of oil & gas, industrial and consumer applications.



High-performance proppant technologies to solve operator challenges and increase well production and EUR.



The industry-leading FRACPRO software portfolio provides unparalleled fracture design, analysis and monitoring capabilities to optimize production.



Our fracture consulting services provide our clients with access to expertise and hands-on field execution for wells in unconventional plays to help reduce costs and operate efficiently.

Health, Safety & the Environment

Protecting our employees, contractors & the environment

Approach & Values

Learn about our company standards and our way of doing business

Get in touch!

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