![Mountain Goat Reverse Helix Trommel Concentrator ...](/6ky5vhl/652.jpg)
Mountain Goat Reverse Helix Trommel Concentrator ...
The 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.