Appalachian pure-play CNX Resources Corp. has signed a 15-year deal with a California-based technology company to capture methane to manufacture a biodegradable polymer. 

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CNX, which develops unconventional natural gas and coalbed methane assets throughout the Appalachian Basin, would capture the methane from coal mines and other third-party industrial operations for Newlight Technologies Inc. 

Newlight has partnered with a subsidiary of Fortress Transportation and Infrastructure Investors LLC (FTAI) to build a manufacturing facility at the Long Ridge Energy Terminal in Hannibal, OH. The facility would utilize the methane to produce what it calls Aircarbon, a naturally occurring molecule known as polyhydroxybutyrate, or PHB. 

The partnership aims to reduce both greenhouse gas...