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Trommel Design

This is what the inside of a trommel barrel should look like, fast, simple, less wear and fast ejection of screened gravel in most rotary screen applications.

Most alluvial gravel is easy to scrub, the real secret is to use the weight of the gravel to scrub the gravel. As you can see here at around 75 yards per hr, with a 5 ft diameter screen 25 ft long you will get a good scrub.

The 1 inch water spray bars pushes a lot of water through the media creating a very good liberating scrubbing action.

Trommel Design

Using an excavator to feed with is usually the most long term productive way of introducing material to the washing system. The first 6 or 8 ft of blank barrel helps wet, distribute irregular sand and gravels to your screens and recovery system be it simple sluices, jigs, or any other type of gravity recovery system.

The real problem most operators have is the screened material. This is where the biggest problem in gold recovery is encountered. I will share more tips on what I have encountered in later posts, the new season is fast approaching!!!

~ Rob Towner

Trommel Design

This setup I had with two trommels served me very well during a time we had hungry ground and low gold prices. This is a set up that is really reasonably cheap and you can usually keep one going all the time. We worked competitively most of the time and we got some impressive yards washed. I am exploring this option again because the numbers look pretty good against just one big plant. You can get a lot of control of your gravel and should always make good rock in the box runs which will net you the gold. Double trommels are surprisingly easy to keep going. Lot of muck going through my two plants!!

~ Rob Towner

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Our company engaged Rob Towner to do the final setup and complete the wash circuit of our pilot plant to begin a feasibility study of an ancient mining district gold concession in Mexico, in order to construct a full scale modern mining operation that will eventually run 4000-5000 tonnes per day or pay ore. Rob is without question one of the most knowledgeable, and talented miners on the planet. His experience and know-how benefited our mining team tremendously and he worked right along side our crew. His work ethics are as high as I have ever seen and he gets the job done. We were right on schedule, never missed completing the days work and finished on budget and on time. Many thanks Rob, you're our favorite Montana Mining Gringo. Best wishes from our mine to yours.
Merv, Mexico
I have had Rob assist me on a number of occasions with my gold mining. When nobody else can fix it or figure it out, Rob jumps in and seems to put it all together so that what is stopped or busted starts working. I would never have got my wash plant at my mine working without his help. He knows how to keep the pay dirt being processed in the plant. I have seen him build stuff and weld stuff to get something fixed that seemed impossible but he gets 'er done just fine. Rob can read the ground like no one I have ever seen, he has thousand of ounces under his belt and my experiences with him show it. He has helped me setup my mine and plant in many different regards. I consider myself lucky I ran into Rob.
Jack, Montana
You and Les are top shelf. Thanks for all your help. I like how you guys operate.
John, Bering Sea
Montana Tech, said you where the Yoda of this gold stuff. My brother and I got a 100 acre gold claim......
Rod, Montana