" supplementing this bill, i also sent two letters to the department of defense and the department of energy expressing my strong support for advancing america's energy capabilities by domestically mining and refining critical earth minerals such as cobalt. please see the below links for access to these letters. rep. donalds' letter to the department of defense rep. donalds' letter to the department of energy original cosponsors of the cobalt act include: representatives salazar, nehls, feenstra, posey, cawthorn, crawford, baird, rosendale, hern, and mullin. click here to read the bill in its entirety. ### enews sign up  visit my website  view online for immediate release september 14, 2022 contact: harrison fields (202) 225-2536 rep. donalds introduces the cobalt act washington, d.c. - this week, rep. byron donalds (r-fl) issued the following statement regarding the introduction of the cobalt optimizes batteries and leading technologies act of 2022 or the "cobalt act.