Methane 03 : A colorless, nonpoisonous, and flammable gaseous hydrocarbon. Methane (CH4) is emitted by marshes and by dumps undergoing anaerobic decomposition. (Bul D11)
The Mudblogger (Oilfield, Energy and Related Photographs), Oil Field Glossary, TX, USA 2014. http://mudblogger.com/oilfield-glossary/, (Oil - Amer) {777}