Personally, I think a better choice would have been to carve the Tusks into Elephant Sculptures and distribute them to Musueums around the world to demonstrate the problem. This solution just adds CO2 to the atmosphere.
RE
True.
But I would prefer the tusks be stored in prisons. Every person convicted of participating at some level of the poaching to selling and owning ivory should be required to carry 50 pounds of tusk around for the duration of their sentence.