Mountain Goat Reverse Helix Trommel for gold mining prospecting metal-detectors-over-5-000 Works in manual or battery

Works in manual or battery mode

Hand Rod Dimensions:

Attachment: Velcro tap or rubber band

12 volt Battery & Charger

Manufacturer-backed warranties

Mountain Goat Reverse Helix Trommel for gold mining prospecting metal-detectors-over-5-000 Works in manual or batteryThe Mountain Goat Trommel is a reverse helix system built on the same principle as the huge mining trommels used by large mining companies all over the world, but this is light and portable. The reverse helix system came from the Archimedes Screw Pump invented over 2,000 years ago by the mathematician Archimedes. The Mountain Goat is efficient because the spiral riffles inside of the tube turn and bring the heavy materials up to the high end of the