For example, are you thinking about:
* The Seven Dwarfs from Snow White: They were mining for gems.
* The Dwarves from The Hobbit: They were digging for gold and other treasures.
* Dwarves from other stories or mythologies: There are many different dwarves in literature and folklore, each with their own goals and motives.
Once you tell me which dwarfs you're interested in, I can give you a more specific answer!