Tinkling the Ivories?

It has been reported that a 'gold-rush' is underway in Siberia as the melting permafrost has made it much easier to access ivory from mammoth tusks (https://www.theguardian.com/world/2019/jul/14/permafrost-thaw-sparks-fear-of-mammoth-ivory-gold-rush-in-russia). People can, reportedly, make fortunes by selling the material as 'ethical ivory' to the Chinese market. Although removal of material is claimed to be 'regulated', the prospecting (using motor-boats and water jets) is speeding up the thawing and releasing yet more 'greenhouse' gases.