Auro
Ferro
Colorado
Cupro
Metallo
Nickel
Phosphoro
Mineral
Argento
Cobalt
Plumbo
Uranium
Herbert_Hoover
Platino
Denver_(Colorado)
Marmore
Mineral_crude
Galena
Almadén
Coeur_d'Alene_(Idaho)
Frederick_Gardner_Cottrell
Dynamite
Zincheria
Donbas
Insula_de_Hashima
Petra_blau