To dig mines is hard work and little profit to thee.
Dream dictionary: Mines dream meanings
…To see mining in your dreams, denotes that an enemy is seeking your ruin by bringing up past immoralities in your life. You will be likely to make unpleasant journeys, if you stand near the mine. If you dream of hunting for mines, you will engage in worthless pursuits….
…In dreams mines refer to all the treasures and riches that have not yet come to light. To dream a mine it’s an omen of wealth and benefits to a worker, businessman or entrepreneur. To a scientist mine dream represents a scientific discoveries or new applications of science. To a doctor, a dream represents the discovery or the healing of a new disease. To a politician it means founding a political party….