The 12-inch Gold Dredge

Each dredge is designed and custom-built to adapt to your individual property needs.

12-inch Dredge Specifications

CAPACITY: 300 YARDS/HR.
WEIGHT: 25 TONS
HEIGHT: 24 FEET
LENGTH: 45 FEET
WATER: 6,000 GPM (Can be recirculated)
WIDTH: 26 FEET
COST: $3.5 million USD
POWER PLANT: Two diesel engines delivering 1013 continuous horsepower drives a 7,000 GPM water pump and a 250 KW generator (3-phase, 220/110).

Dredge Operations

  • Two men per shift can operate
  • Powered by two cat engines:
  • 733 hp & 3406-280 hp
  • 200 psi water pump
  • 250 KW 3-phase, 220/110-volt generator
  • air compressor
  • Centrally-located electrical & air-generated controls
  • Designed to operate on a river or pond.
  • Needs at least three feet of water to start operating

How it works

The 12” dredge handles an average of 300 cubic yards of material per hour, or 7,200 yards per day. The unit digs by sucking water and gravel through a 12-inch pipe. A unique “Jet Principle” moves the material without use of a sand pump. The water and gangue material are dumped into a flume and washed over a grizzly.

The sand and mineral particles are fed into the concentrator. The gangue goes to tailings. Upon completion of the cycle, the mineral particles are concentrated at a minimum ratio of 2,000 to 1.

At this rate, the concentrate contains over $5,000 per ton in gold.