Mantel has raised 18 million dollars in strategic funding from Constellation Technology Ventures, Azimut Investments and existing investors. The carbon capture company now holds 50 million dollars in total funding. Pulse 2.0 reported the round in a post that summarized the investment and linked to its full article. The post identified the participants and the updated total but supplied no additional terms. Among visible replies on X the announcement stands as the primary statement of the transaction to date.