The Fourth Doctor uses a snorkel to breathe while buried beneath ore. (TV: The Robots of Death)
Ore was a type of rock.
Peladon was where the Galactic Federation mined most of its trisilicate ore. (TV: The Monster of Peladon)
Sandminers like Storm Mine 4 mined and processed ore. SV7 discovered the Fourth Doctor inside a hopper on Storm Mine 4, having viewed readings that displayed impurities in the ore it contained. (TV: The Robots of Death)
Diloona was the ore that powered Craxon spacecraft. (COMIC: The False Planet)
Elesium ore was used as a component in the fuel that blasted a ship into hyperspace. (AUDIO: The Prisoner's Dilemma)
The planet Varos was a major source of Zeiton-7 ore. (TV: Vengeance on Varos)
