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Mission Statement

Full Circle CO2 is dedicated to naturally creating high-quality cannabis essential oils for medicinal use and general well-being. We employ world class and cutting edge technology to obtain the most pure cannabis essential oil in a renewable and responsible manner.

Company History

Full Circle CO2 was formed in January 2015 under the Oregon Medical Marijuana Program. In that time we have crafted therapeutic high terpene extractions and have developed a wide variety of products. Our favorites, our non-winterized vape oils, penned dab oils (no kit, no fuss) and our specialty topical rub.  

Just looking to process? We do that too.

Contact us for information regarding specialized processing, unique to your needs.

Paul K Hampshire, III, President, Founder

Since 1997, Paul has been involved in the cultivation and research of the cannabis plant. He has utilized his skills as a chef and construction contractor to design unique growing techniques, protocols and facilities. In January of 2015, Paul acquired a Supercritical CO2 extractor and has since been applying his skill set to the creation consistent, high quality cannabis essential oils.


Siobhan Ruby McConnell, MS, RG

Ruby is a Registered Geologist with the State of Oregon. Ruby received a B.S. In Geological Sciences from the University of Oregon and an M. S. in Geology from Northern Arizona University in 2004 and worked until 2009 as a consulting environmental geologist specializing in contamination studies and remediation. Ruby joined Full Circle CO2 in July of 2015 as a contributing researcher and operations manager.