1. Using the Popandson sluice technology for ASM fine gold recovery
The ASM Sluice Program
Using the Popandson sluice technology for ASM fine gold recovery

2. ASM Sluice Program Mission Statement
We are the not-for-profit ASM Sluice Program, and our mission is to get the Popandson sluice technology directly into the hands of the ASM.  The first step, already underway, is to send actual sluices to the ASM mining areas, at no charge.  This, to introduce the technology and jump-start the use by the ASM.  They can then determine if it is useful in their situation.  The second step, and ultimate goal, is for industry local to the ASM to produce the sluices.  If they catch on, then plans are available via , hard copy or website to whoever wants to build them. 

3. How fine is “fine gold”? As small as 35 microns/400 mesh

4. How can “fine gold” effectively be recovered by the ASM?
Mercury amalgam.
ASM Health hazard, Environmental hazard
Cyanide.
Expensive recovery
Centrifuge bowl.
Expensive and Hi tech.
Popandson Sluice
Inexpensive, rapid through-put, low tech
Other inexpensive devices with sketchy performance data have good potential

5. Popandson Sluice Design

6. A finished sluice, ready to work

7. Benefits of the Popandson sluice
High performance recovery, tested at 20 lbs/min feed, USGPM
Nuggets to 5/16” (5mm) dimension
95% recovery of mesh gold
85% recovery of mesh gold
No mercury required
Simple operation by unskilled persons
Wide range of acceptable operating conditions of water, feed, slope
No health risk
Simple, dirt cheap construction, can be made by semi-skilled workers with standard tools and materials
No patent restrictions
Plans and coaching available to anyone that wants to build them

8. The End The ASM Sluice Program SNDG@Comcast.net
The first of the ASM sluices sent to Mongolia, Fall 2006, recovered micron gold (400 mesh) during initial trials.
The End The ASM Sluice Program