I took 16 gallons of fair demo tailings and ran them through my Mini-Max outfitted with a 100 mesh screen. It took me a total of 67 minutes to feed all 16 gallons which averages out to a little over 4 minutes a gallon or 21 minutes per 5 gallon bucket.
That included swapping out tailings buckets 8 times and one odd pump snafu, so 16-18 minutes per 5 gallons was probably more accurate.
I used an 1100 gph bilge pump and closed the ball valve about 1/4 turn. The pump and valve are included with the Mini-Max.
I used a 5 amp hour dewalt power tool battery to power the pump and another to power the machine. I used a voltage regulator for each to bring them down to 12v from 20v.
At the end of the experiment the pump’s battery showed 2 of 3 bars and the machine’s battery showed 3 of 3 bars.
The oversize cons (the material trapped in the tray) revealed 2 specks of +100 gold. That is amazing!
The undersized or superfine cons (the material that passed through the tray screen and collected in the tub underneath) revealed a smattering of -100 gold but it added up to less than 100th of a gram. It actually did not register at even a 1000th but I am skeptical that the scale is that accurate.
Considering I started the fair with 2 grams of gold and then recovered 2 grams at the end of the fair, this experiment proves these machines have a recovery rate of 95% or better. In this case it was at least 99%!!!
#alaska #gold #gems #nuggets #goldrush #placer #riverdanceminijig #goldrecovery #beringseagold #innovation
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