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Re:Launch HN: Heimdal (YC S21) – Carbon neutral cement by matsemann on Monday August 02, 2021 @11:32AM (#28037962)
Cool. Yeah, maybe the old way of making cement will be too expensive in the future compared to a greener way. Good luck with your first mover attempt!

Another curious question: Do you make an "actual" limestone, or what is the final output? A rock, chalk, mudlike or something?

Re:Launch HN: Heimdal (YC S21) – Carbon neutral cement by marcuslima on Monday August 02, 2021 @11:47AM (#28038207)
Thanks! Yeah, we think it will be. But more importantly, the old way isn't a viable option. It's effectively off the table. Sweden has already banned mining of limestone (https://www.ribaj.com/products/cementa-limestone-mine-suspen...) The product comes out as a really finely ground powder
Re:Launch HN: Heimdal (YC S21) – Carbon neutral cement by cerved on Monday August 02, 2021 @01:11PM (#28039491)
to be specific, an application was not approved and the reason the court gave was insufficient proof that continued mining wouldn't effect the local groundwater
Re:Launch HN: Heimdal (YC S21) – Carbon neutral cement by marcuslima on Monday August 02, 2021 @02:15PM (#28040517)
Yes, thanks for clarifying