noun: (Australia, New Zealand, mining) Overburden: waste material generated while searching for minerals or while mining, such as when sinking a shaft.
noun: (Australia, New Zealand, mining) Tailings: waste rock from which the wanted gold, minerals, opal, etc., has been extracted.
noun: Nonsense, rubbish.
noun: (UK, Yorkshire, dialect) A mess; the result of a blunder.
verb: (transitive, mining) To clear waste material out of a mine.
