Hertha Metals
Develops a continuous process for producing iron and steel from different ore grades using natural gas or hydrogen.
$133.7MSeries A
ParticipantGF
Gates Frontier
Activity from announced rounds
Activity in this selectionOct 17, 2026 · Sep 18, 2026
Gates Frontier is the investor named in LifeMine and Mazama announcements, with Mazama’s relationship also confirmed by co-investor commentary.
Recorded funding activity
Mazama develops engineered geothermal reservoirs in very hot rock. LifeMine develops medicines using fungal genomes, while Hertha works on continuous iron and steel production. The investor remains distinct from Gates Foundation, Gates Ventures and Breakthrough Energy.
- Rounds participated in
- 1
- Confirmed lead rounds
- 0 All roles disclosed
- New companies
- 1 First participation on record · 0 follow-on
- Funding in participating rounds
- $133.7M 1 disclosed · full round size, not this investor’s share