Kulingana na habari iliyotolewa Novemba 8, 2021, Uchunguzi wa Jiolojia wa Merika (USGS) ulikuwa umekagua spishi za madini kulingana na Sheria ya Nishati ya 2020, ambayo iliteuliwa kama madini muhimu mnamo 2018. Katika orodha mpya iliyochapishwa, spishi zifuatazo 50 zinapendekezwa (kwa mpangilio wa alfabeti).
Aluminium, antimony, arsenic, barite, beryllium, bismuth, cerium, cesium, chromium, cobalt, chromium, erbium, europium, fluorite, gadolinium, gallium, germanium, graphite, hafnium, holmium, indium, iridium, maniumium, graphium, graphite, maniumium, maniumium, maniumium, maniumium, maniumium, maniumium, maniumium, maniumium, maniumium, maniumium, maniumium, maniumium, maniumium, maniumium, maniumium, maniumium, maniumium, maniumium, maniumium, maniumium, maniumium, maniumium, maniumium, maniumium, graphium, maniumium, graphium. Nickel, Niobium, Palladium, Platinamu, Praseodymium, Rhodium, Rubidium, Lutetium, Samarium, Scandium, Tantalum, Tellurium, Terbium, Thulium, Tin, Titanium, Tungsten, Vanadium, Ytterbium, Yttrium, Zinc, Thulium.
Katika Sheria ya Nishati, madini muhimu hufafanuliwa kama madini yasiyo ya mafuta au vifaa vya madini muhimu kwa uchumi wa Amerika au usalama. Wanachukuliwa kuwa mnyororo dhaifu wa usambazaji, Idara ya Mambo ya Ndani inabidi kusasisha hali hiyo angalau kila miaka mitatu inategemea Sheria mpya ya Njia ya Nishati. USGS inaomba maoni ya umma wakati wa Novemba 9-Desemba 9, 2021.