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As of 2019, GCM Industry and its affiliated companies have 5 advanced mining machine production bases and one production base under construction, with a total production area of 1,200,000 square meters, which can better meet more needs of global customers in the future.

 

Beginning in 1987, GCM industry has developed steadily and steadily in the field of mining machines, and has gradually formed a complete R&D, production, sales and service system.

Click the links below for detailed information about our areas of expertise and broad range of equipment offerings.

Gould Engineering Bazooka Dredge

Venturi Jet Analysis by Reggie Gould To understand what the venturi is used for you have to know what it is associated with. The first dredge was a treadmill, and was first used by the Dutch in 1589, which was horse-powered, the ones that eat hay.The first bucket dredge was powered by steam and was invented by an American (Oliver Evans) in 1804.

Dredge - For Sale Classifieds - Claz.org

4 gold dredge. 8 hp Briggs engine that runs great. Keene P-280 water pump. Complete air system, including compressor, air hoses, reserve tank, and regulator. Great gold catcher with extra long box, 5 feet. New ones are only 4. One ounce of gold …

DIY 4" Gold Dredge - YouTube | Gold prospecting, Gold ...

Gold Sluice Gold Mining Equipment Panning For Gold Diy Pond Gold Prospecting Metal Detecting Gold Wash Boat Plans Gold Keene 2 Inch Backpack Dredge With Suction Nozzle 2004PSNF This super high powered backpackable gold dredge …

Build A Simple PVC Dredge Nozzle - YouTube

Nov 21, 2017· This is my version of a PVC dredge nozzle. It was cheap and easy to assemble and seems like it will be strong. Thanks for watching.

Hand Dredges Gold Retrieval | Gold Prospector - Gold ...

Gold can hide down in the deepest part of a crack or crevice or behind a boulder and often is best reached with a hand dredge, also called a "sucker gun" or "suction gun." This gold prospecting tool is ideal for working below the water line when a motorized dredge cannot be used.

Pond Dredge | Dredge Pump | Portable Muck Dredge

This dredge system has a powerful 190cc Briggs & Stratton Professional Series 4-stroke gas powered engine. The capability of this powerful sediment pumping system allows it to pump about 2118 cubic feet of water per hour, (15,800 gallons) along with up to 211 cubic feet of sediment per hour.

DIY 4" Power Jet Gold Dredge Springtime Modifications and ...

Mar 26, 2019· DIY 4" Power Jet Gold Dredge Springtime Modifications and Prep Prospector Tripp ... Homemade Gold Dredge ... The Silver Fiend 19,347 views. 20:05. Custom 2" Gold Dredge with Keene Jet log nozzle ...

Plan and design your own home made suction dredge for gold ...

No question that many gold prospectors would love to own a dredge, and dredges are very cool pieces of prospecting equipment that will allow you to mine some very nice gold nuggets, but the prices for new ones are really high.Don't forget however, that in the earliest days of dredging, there were no manufacturers, and all small suction dredges were handcrafted units made in someone's garage.

Gold Prospecting w/ DIY Backpack Mini Dredge - 1.5" pvc ...

Jun 14, 2016 - Gold Prospecting w/ DIY Backpack Mini Dredge - 1.5" pvc nozzle, 1000 GPH Bilge Pump - BEDROCK SNIPER - YouTube

Homemade 3 Stage Under Current Sluice Box catching Gold ...

If you make a sluice box for yourself, I wish you the best of luck with your project. California Gold dredge Country: My first use of this sluice was on my 2003 prospecting trip to Sierra City. For more about that trip and the sluice box, see SIERRA CITY PROSPECTING. Thanks for checking out my gold …

Keene's 8 Inch Dredges are the gold standard

This dredge is so light that it can easily be hauled in the back of a truck. The engine and pump combined weigh only 500 pounds which is several hundred pounds lighter than other diesel engine and pump combinations. The dredge …

How to Build a Gold Dredge | Our Pastimes

Gold dredges are machines that pulls the gold from dirt or gravel. The gold dredge became popular at the time of the California Gold Rush, when thousands were looking for the shiny mineral as a way to strike it rich. Gold dredges can be as complicated as machinery attached with vacuums and hoses, or as simple as a homemade gold dredge sluice box.

DIY Handheld Suction dredge Help - Gold Prospectors ...

I have been toying with a homemade hand dredge, simalr to ones you can buy at the gold shows for about $100. I've seen lots of videos on you tube about how to make them and I have a pretty good …

Infinity-Couple jet - GOLD PROSPECTING - Nugget Shooter …

Jun 09, 2015· In my opinion, if you have the option of an I-jet with a trash pump or a Dredge pump with a standard dredge nozzle, the I-Jet is the way to go. The pumps are cheaper and more readily …

Gold Dredges at Kellyco | Gold Prospecting Equipment

Find the best gold dredges and dredge parts for sale here at Kellyco Metal Detectors. Or call 855-910-6955 to speak with our experts.

5 Steps to Professional Prospecting: How to Build a Gold ...

How to Build a Gold Dredge. A gold dredge is a mining machine used for extracting gold from grit, sand, and dirt using mechanical methods or by means of water.. In olden days, these machines were very large in size. In recent times, small suction equipment came into the market and this has made the operation more simple.

Dredge Power Jet with jet log - Gold Fever Prospecting

Dredge Power Jet with jet log - Power Jet nozzles are available in various sizes from 2" to 6" with either single or twin jet logs. Prices are subject to change without notice. Choose your size ...

Plan and design your own home made suction dredge for gold ...

Sep 1, 2013 - Plan and design your own home made suction dredge for gold mining. Sep 1, 2013 - Plan and design your own home made suction dredge for gold mining .. Saved from ... Today we're proud to present another DIY project from a fellow Doing the Stuff Networker. Jamie Burke is a master at repurposing trash and junk.

Keene 2 inch back-pack dredge ( FREE SHIPPING ! )

Shipping: Please note: FREE FREIGHT is available only within the lower 48 US States. Delivery info: This back pack gold dredge is in very high demand and subject to unannounced back-order. Delays …

How to Build a Hand Suction Dredge - YouTube (With images ...

Apr 5, 2017 - How to Build a Hand Suction Dredge - YouTube. Apr 5, 2017 - How to Build a Hand Suction Dredge - YouTube. ... DIY Ryobi Gold Sniping Hand Dredge. ... Gold Sluice Box Gold Mining Equipment Gold Wheels Tube Youtube Gold Prospecting Victorian Gold Metal Detecting Boxing News Gold …

Proline Gold Mining and Prospecting Equipment/Gold Dredges

2.5" Dredge. This machine was a trend setter when it first came on the market and it continues to be one of our best sellers many years later. When other 2.5" dredges were floating on inner-tubes, required a suction nozzle for producing dredge vacuum, and had limited depth capabilities, the Proline 2.5" dredge sat on sturdy pontoons and used a power jet for dredge vacuum.

Hand Dredge : 5 Steps (with Pictures) - Instructables

A hand dredge, also called a gold sucker, is basically a pump that will allow you to suck up material. They allow you to suck up material in hard to reach places, such as under rocks, and in crevices. Hand dredges work extremely well if you are prospecting for gold …

Choosing a GOLD Dredge - YouTube

Sep 27, 2017· Homemade Gold Dredge - Lost Files - Duration: 20:05. The Silver Fiend 19,512 views. 20:05. Jays Brand New Keene 2 inch Backpack Dredge + Cold Water Dredging with Wetsuit HeaterEp.01 Se.02 - ...

1" inch electric gold dredge 12v 3amp pump - YouTube ...

1.5" inch electric gold dredge 12v 3amp pump shows it in action and its power, very impressive for a 12v 1100GPH bile pump. i have a 12v 35AH battery which will keep this bad boy going for just over 10 ...

Crash Box header vs Jet Tube? [Archive] - AMDS Adventure Forum

My friend uses a Crashbox with a short Jet Tube on his 4 inch homemade dredge, but on the output side of his header box, even with a heavy rubber mat, it looks like a major league Tsunami running thru his riffles. He seems to catch the gold alright in the upper 1/2 of his sluice and uses a considerable amount of 3/16 inch hole punch plate up there.

DREDGE SUCTION NOZZLES - You Struck Gold!

The tubing is the same diameter as is the inlet jet diameters, The length of the jets are longer see chart for specifications. The power tube must have a slot cut that will fit the jet flush to the full length of the 5 degree and flush to the inside of the tube. This also must be bore-sighted for optimum performance.

want to build a 4 inch dredge. | Gold Dredging Forum

Aug 06, 2013· The pump is the heart of a gold dredge, and the pump used on any dredge should be one designed specifically for gold dredging. If a pump is used that is not specifically designed for dredging …

2" suction dredge | Gold Dredging Forum

Dec 06, 2012· Production dredges do not usually have a reducer placed at 'the outlet of the venturie'. On production dredges a tapered tube is usually placed at the inlet to the 180 degree bend on a suction nozzle and at 'the inlet on the venturie of a power jet'. Or, the tapered tube …