Our founder, Dr. Patrick Zimmerman created C-Lock Inc in 2005 in Rapid City, South Dakota.

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Dr. Patrick Zimmerman

C-Lock Inc. professionals utilize cutting-edge science and engineering to monitor, analyze, and control cattle biological parameters. Through a systematic approach that incorporates intelligent data-mining techniques, measurements, and numerical modeling, we can detect problems that lower efficiency and productivity. Our unique capabilities to pinpoint problems, identify opportunities, and offer a cost-effective solution saves our clients' money.

Our company focuses on agricultural practices but also has experience in measuring emissions related to energy production. We have created GreenFeed (US Patent 7966971, others pending), a system that measures methane and metabolic carbon dioxide emissions from ruminants such as cattle to provide farmers and ranchers with real-time data to document improvements in feed efficiency and lower methane emission losses.

The C-Lock Inc. staff of talented scientists, engineers, and technical personnel are eager to provide their expertise to support your industry. If you have an engineering problem related to energy efficiency or GHGs, we can solve it.


Dr. Patrick Zimmerman
Dr. Patrick Zimmerman


Dr. Patrick Zimmerman was the Director of the Institute of Atmospheric Sciences and a professor in the Department of Atmospheric Sciences at the South Dakota School of Mines and Technology when he founded C-Lock Inc in 2005 he specializes in engineering education, technology development, and research. Zimmerman's research career has spanned nearly four decades. Research Profile

Scott Zimmerman
Scott Zimmerman


Scott Zimmerman is the president at C-Lock Inc. He has many years of experience with numerical modeling and large databases, and has a solid background in analytical measurements. He has a bachelor's degree in civil engineering from Washington State University and a master's degree in water resource engineering and hydraulics from the University of Iowa.

Tom Zimmerman
Tom Zimmerman

Chief Technology Officer

Tom Zimmerman is the lead person for parts development and assembly. He understands every part and component inside our instruments and how to repair and maintain them. He has a degree in interdisciplinary science from the South Dakota School of Mines and Technology.

Mike Billars
Mike Billars

Vice President of Engineering and Support

Mike leads our electrical engineering department, programming and also is the head of our support team. He has been instrumental in development and support of our products. He has an electrical engineering degree from the South Dakota School of Mines and Technology.

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Karla Pedersen

Sales Manager

Karla Pedersen leads the sales development team. Growing up in a small town of Webster, Minnesota. She attended the National American University with a business administration degree and an in emphasis in equine management. Karla is passionate about providing our clients with the newest and most effective technology in ruminant emissions and feed intake. She is excited to be part of a family of innovators, progressive thinkers and problem solvers. Reach out to Karla for any questions about our products.

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Marcus Mann

Chief Operating Officer

Marcus Mann has a Mechanical Engineering degree from South Dakota School of Mines and Technology. With ten plus years of experience in metal fabrication and design this includes designing and building new parts or fixtures. He leads our operations team here at C-LOCK. As a team we ensure that we produce a quality product for our customer as safely as possible.

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Dr. Meredith Harrison

Lead Scientific Advisor

Meredith Harrison is a Scientific Advisor at C-Lock. She has earned her PhD in Animal Biology with an emphasis in feedlot production systems from the University of California, Davis. Her research focuses on the combined application of precision livestock technologies and mathematical models to improve beef and dairy production biological and economic efficiency. Meredith has substantial experience with statistics, experimental design, data management, and modeling. She has developed models to predict methane emissions, dry matter intake, feedlot cattle growth and composition, and to optimize profitability. In addition to her modeling experience, Meredith has significant knowledge of feedlot cattle nutrition and management. Meredith believes in continuous improvement of livestock production efficiency and sustainability through technology, data, genetics, and management.

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Ryan Kent

Customer Support Manager

Ryan Kent is the Customer Support Manager with C-Lock and has over 15 years experience in logistics and customer support. He excels at problem solving and is determined to develop relationships that will support collaboration for years to come. Ryan is a SD native glad to be home again after 11 years in Washington. He has a bachelors of science in business administration degree from the University of South Dakota.

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Chris Dieball

Lead Training & Installation

Chris Dieball is the Technical Support Specialist with C-Lock. He helps resolve technical requests or problems and troubleshoots technical process issues to maintain system functionality. He trains new users in person or through web-based training, training videos, and user manuals. He is a 20 year retired military service member, and a Rapid City SD native.

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Ted Cunningham
Ted Cunningham

Sales Associate

Ted is located in south central Missouri and acquired his degrees in Animal Science and Ruminant Nutrition. Ted's experience in the beef industry range from nutrition, commercial beef production systems, seed-stock management and marketing, which provide him with a vast perspective of the beef industry. Ted, along with wife Ashlee and three children own and operate Cunningham Livestock, which specializes in custom cattle feeding and management, along with replacement heifer and bull development. He believes improvements in both feed and management efficiency for the beef business is critical for long term industry sustainability and profitability. Reach out to Ted for any questions about our products.

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Dr. Degong Pang

Sales Associate

Degong is a graduate of the Swedish University of Agricultural Sciences with a PhD in animal science with specialization in animal nutrition and management. During his studies in Sweden he focused on forage quality in Nordic conditions and the effects of dietary factors on ruminant greenhouse gas emissions. Degong utilized our GreenFeed units and after 7 years of study and research with 10 journal publications, and leading several conferences he has joined our team. Reach out to Degong for any questions about our products.

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Jeff Clark
Jeff Clark

Sales Associate

Jeff is an animal science graduate of California Polytechnic State University [San Luis Obispo] with a concentration in beef production. His extensive background includes a direct focus on advancing animal efficiency through genetic selection based upon tangible production data such as enteric emissions (GHG's), feed efficiency and industry specific animal performance metrics. His expertise with large-scale, multi-species, purebred and commercial production management allows him to guide researchers and producers to utilize C-Lock products in extensive applications. Jeff’s passion lies in ensuring the sustainability of the livestock industry, aiding producers in increase their production efficiency, and helping researchers advance future technology and methodology. Reach out to Jeff for any questions about our products.

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Rebecca Bader

Marketing Director

Rebecca leads all of our marketing and advertising content. She has a degree in agriculture communications with a minor in animal science from South Dakota State University. Originally from a small farm in Wisconsin, she is now based in Rapid City, South Dakota with her husband. Rebecca is passionate about sharing the benefits of agriculture technology on all platforms. She is available for any media requests.

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Traveling Support Technician Team

Jonah, CJ, Conner

The traveling support technicians are a reliable and resourceful team dedicated to ensuring customer satisfaction by delivering efficient and effective on-site technical support. To schedule a traveling support technician contact Chris Dieball.

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Technical Support Team

Robert, Tyler, Dale, Ryan, Chris, Mark, Jakob

The technical support team is a dedicated and knowledgeable group of professionals who provide top-notch technical assistance and support to our clients. They understand the importance of effective communication and are committed to client satisfaction.