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  • Pumping muck | Questions & Observations | Pond …

    Oct 05, 2011· at my work we use trash pumps to move "sand". Yes sand. It is an old gold mine being reclaimed as a science lab. In the mine days, after the "ore" was crushed and ran though the screening proccess, it was "pumped" or rather syphoned down the mine and refilled exivated areas to prevent caveins as well as a convient …