IF Redwood Materials wasn't a private company then I would certainly be interested in investing in Redwood Materials, but so would many other potential investors.  At present it remains a private company, but that could change.

Is EV Battery Recycling Company Redwood Materials Publicly Traded? (marketrealist.com)

Barring an IPO for Redwood Materials, and in the meantime, it may be that American Manganese might be an option.  AMYZF.  Yep, another penny stock, but so was Western Lithium at one time.

For now, I am adding AMYZF to my "Watch List" and monitoring news on this company.

Sustainable Lithium-ion Battery Recycling - American Manganese Inc.

Okiedo