The other greenwash favoured by coal-burners is to hold out the prospect that emissions will soon be cleaned up and buried under ground using carbon capture and storage.

Hardened and deeply buried targets are increasingly used to conceal and protect command-and-control facilities and storage of non-conventional weapons.

Due to the reasons such as the long buried time, the change of the storage conditions after excavation, and so on, there exists a tough problem of preventing the ancient bronze relics from corrosion.