
Mass Magnetics
USA-made magnetics for aerospace, robotics and defense.
About Mass Magnetics
Mass Magnetics turns recycled rare-earth scrap into high-performance permanent magnets, made in America. The materials we supply are the backbone of electric motors, sensors, speakers, hard drives, and electronics. Our process enables DFARS-compliant magnets for defense, aerospace, and industrial manufacturers who demand domestic supply without compromising on quality. Operations in Greater Boston, MA (Greentown Labs) and Columbus, IN.
Founders

Matthew Groll
Founder
Co-founder and CTO at Mass Energy Company. Former NASA/Columbia/MIT. Previously worked on thermal systems and guidance/navigation at NASA Johnson Space Center for ISS and Artemis lunar missions. Also previously worked as a Member of Technical Staff at Draper Laboratory. Studied Mechanical Engineering at Columbia, captaining the Formula SAE and Robotics Club, then earned a Masters in Manufacturing from MIT.

Eric Silver
Founder
Founder at Mass Magnetics. Worked for years in pilot cathode production for lithium-sulfur battery chemistries. Now I'm fixing American magnet supply chains.