Happy first day of summer! To learn more about #ShaleGas visit http://t.co/zfHfWN0Zjr. #LearnAboutShale #NaturalGas http://t.co/YW5V846ORh
Happy first day of summer! To learn more about #ShaleGas visit http://t.co/zfHfWN0Zjr. #LearnAboutShale #NaturalGas http://t.co/YW5V846ORh