The case for Latrobe Magnesium 2022, page-225

That's more realistic.
There will be carbon emissions for both LMG and Magnium in

• recovering the feedstock to feed into the process
• preparing the feedstock -particularly for Magnium however LMG fly ash and slag will already be ground down to a powder
• baseload power to back up the renewables - we know that renewable energy is not 100% reliable

So, unless Magnium fixes carbon in the process to a level that offsets any carbon production it's a language phurphy!!
At what point do we start carbon accounting for the process?? In my last job, we also accounted for the fuel staff used to travel to and from work. The fuel our contractors used for deliveries, etc. I get very skeptical about net zero without defining what the accounting includes.