China claims breakthrough in mining ‘flammable ice’ (2017) http://www.bbc.com/news/world-asia-china-39971667
Methane hydrate: Dirty fuel or energy saviour? (2014) http://www.bbc.com/news/business-27021610
China extracts 235,000 cubic meters of combustible ice from #SouthChinaSea, beating previous expectations for the mining operation https://twitter.com/XHNews/status/877834019701891074
Methane clathrates (hydrates) en.wikipedia.org/wiki/Methane_clathrate
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