Okay, so I get that it’s not burning fillings, putting mercury into the air but it sounds like the mercury-laden fillings are now turned into dust and end up in the groundwater. No difference there.
Other than that one nit-pick, it sounds cool! (erm, pun NOT intended.)
I think the metal pieces wouldn’t shatter and could be sifted out for recycling.
One thing the article seems to exaggerate is the reduction in CO2, while there is a savings in any CO2 generated by the fuel used for cremation, this is partially offset by the energy used to create the liquid Nitrogen. And any CO2 emitted during decay will still be released as the ‘dust’ eventually decays. Though I guess their could be difference in the amount of CO2 versus methane released from a standard burial. Methane has four times the greenhouse effect as CO2, so I guess if that were to be the case it could be somewhat significant.
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