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A comment on Launch HN: Heimdal (YC S21) – Carbon neutral cement. Parent comment

Re:Launch HN: Heimdal (YC S21) – Carbon neutral cement by marcuslima on Monday August 02, 2021 @05:12PM (#28042705)
Definitely one for us to get involved with. Unofrtunately it's a 5 year timeline, but that's still not a bad ROI
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