https://chinaenergyportal.org/guidelines-for-promoting-safe-and-green-development-of-the-coal-mining-industry-clean-and-efficient-coal-use/ Tracking China's transition to sustainable energy | Powered by crowdsourced translation Sun, 15 Jan 2017 20:35:36 +0000 hourly 1 https://wordpress.org/?v=6.6.1