As the wheel revolved two and a half times a minute, it raised 250 gallons [950 L] of water from a depth of 1,200 feet [360 m], thus keeping the mine shafts clear.
Sewaktu kincir itu berputar dua setengah kali per menit, 950 liter air terangkat dari kedalaman 360 meter, sehingga lubang tambang tidak tergenang air.