http://sppmechanical.com/portfolio-view/sed-blandit-massa-vel/
http://energymixreport.com/developing-gas-pipeline-infrastructure-in-nigeria-who-is-responsible/
https://www.huffingtonpost.com/2013/10/21/war-on-coal-natural-gas-power-plants_n_4135176.html
https://www.climatecentral.org/news/natural-gas-emissions-surpass-coal-2016-20650
http://www.mineralhq.com/natural-gas-exports-would-boost-economy-say-feds/
www.roanoke.com/opinion/commentary/dudley-the-insanity-of-the-mountain-valley-pipeline/article_08f705b1-7597-5bf3-b2da-c73d56e1ae73.html
https://report.az/ru/proisshestviya/v-azerbajdzhane-na-zavode-proizoshel-vzryv-est-pogibshie-i-ranenye/
https://www.cred.org/the-7-steps-of-oil-and-natural-gas-extraction/
https://www.lngworldnews.com/encana-commissions-cavalier-lng-facility-canada/
http://safeshippingbc.ca/?page_id=105