platinum
Coal and petroleum are Montana's leading mined products.
Ore is mined
sulfur is an element; it must be mined
no
Plutonium is not mined; it is a man made element.
Coal and petroleum are Montana's leading mined products.
Aluminum
There is no way for us to answer- you did not say WHAT element you are asking about. Please repost a COMPLETE question, and we will try to get you a good answer.
Neptunium is an artificial element; it is not mined.
sulfur
copper
Primarily copper and iron.