News and information for the worldwide dredging industry

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A Guide to Dredging Exhibits at CONEXPO

Wade Stockstill of Amerimex in 2002.

Wade Stockstill of Amerimex in 2002.

A Rohr clamshell, ConAgg 2002.

A Rohr clamshell, ConAgg 2002.

A DSC 24-inch diesel Shark Class dredge working in Abu Dhabi on island building.

A DSC 24-inch diesel Shark Class dredge working in Abu Dhabi on island building.

Rotonics is introducing a new size and style of dredge pipe float at this show.

Rotonics is introducing a new size and style of dredge pipe float at this show.

This model P 995 excavator is representative of the large Liebherr hydraulic excavators used in the dredging industry.

This model P 995 excavator is representative of the large Liebherr hydraulic excavators used in the dredging industry.

One of the five dredges DMC has delivered to the government of Iraq.

One of the five dredges DMC has delivered to the government of Iraq.

The Metso Minerals Model L36/Frame 900 dredge pump, new at this show.

The Metso Minerals Model L36/Frame 900 dredge pump, new at this show.

Phoenix Process Equipment’s display of their filter press at the 2002 show.

Phoenix Process Equipment’s display of their filter press at the 2002 show.

An aggregate dredge owned by E.R. Jahna working in Florida, equipped with Pullmaster Model M50 ladder winches.

An aggregate dredge owned by E.R. Jahna working in Florida, equipped with Pullmaster Model M50 ladder winches.

Larry Patella, executive director of the Western Dredging Association in the group’s booth at a previous show.

Larry Patella, executive director of the Western Dredging Association in the group’s booth at a previous show.

AEM - Association of Equipment Manufacturers. L-3224. The international trade and business development resource for companies that manufacture equipment, products and services used for the agriculture, construction, forestry, mining and utility industries.

Associated General Contractors of America. S-10843. National construction trade association representing all facets of commercial construction for both public and private entities.

Amerimex Motor and Controls, Inc. GP-50401. Remanufactures GE 752 and EMD drilling motors for the power needs of dredging and other industries.

Caterpillar Industrial Power Systems. S-15927. Industrial engines used in dredges.

Combi Wear Parts, Inc. C-5583. Full range of teeth and adapters from the smaller back hoe loaders to the larger mining and quarry machines. All of the teeth are made of the highest quality of steel and are 520 HB.

Cornerstone Industries, Inc. C-5521. Designs automated controls for the dredging and sand and gravel industry. The "Dredgemaster," automated fresh water production valve used on hydraulic style dredges along with the "Throttlemaster," automated booster pump control and the "Pumpmaster," automated tank level control are some of the products offered by Cornerstone Industries.

Custom Dredge Works, Inc. C-5521. Started as a division of Midwestern Metals Inc. in 2001 retrofitting older dredges around Topeka, Kansas. After two years of building mainly dredge floatation and pipeline floatation, built their first turnkey dredge. In 2006 built or retro-fit eight dredges, sized six to 16 inches. Has their own line of dredge chain and chain drives, and are working on designs for contractor size dredges. Also provide booster pumps, dredge controls, Pullmaster winches, cutter and chain drives. See owners Charles and John Jones in the booth.

Dredging Supply Company Inc. - DSC. S-12329. Dredge manufacturer specializing in portable cutter suction, underwater pump, and custom-designed dredges, for all applications with specific attention to the aggregate and mining industries. In the booth with be the touch screens used in dredge control rooms, which visitors can "test drive". On hand in the booth will be Bob Wetta, president; Billy Wetta, P.E., CEO; Charles Johnson, director of Sales; John "Sonny" Lightsey, director of Technological Advancements; Charles Sinunu, International Sales; Mike Carlson, P.E., director of Automation; Damon Gonzales, P.E., director of Engineering; Gary Hamilton, COO; Lyn Condict, Domestic Sales; Nick Picou, P.E., Randy Pearson, E.I., and Jeffrey Starks, E.I., mechanical engineers; Tan Nguyen, and Joseph Rovira, E.I., automation; Juan Rayo and Nora Calderon of JRI Engineering, DSC's South American representative.

Dredge & Marine Corporation. H-27023, Hilton Center. Dredge manufacturer. Don King will host the 20 x 10-foot booth, which will include two 10-foot panels with dredge photographs, and a running slide show with dozens of photos of dredges at various locations around the world.

GIW Industries, Inc. C-7072. High-performance, low-maintenance slurry pumps. Introducing the MDX (Mill Duty Xtra Heavy) pump series for mill discharge applications. Another innovation is the newly designed GIW rubber impellers for maximum wear resistance in heavier slurries.

Hagglunds Drives Inc. H-29027. A major supplier to the worldwide dredging industry, manufactures hydraulic drive systems, specializing in heavy duty applications where high starting torque is required along with continuous control for varying speed, stopping, starting, and reversing, with powerful hydraulic motors delivering over 1,000,000 ft. lbs. of torque from stand still, to speeds up to 400 rpm. Widely used in dredges for pump and cutter drives.

Historical Construction Equipment Association. L-3506. A non-profit organization with 4,300 members worldwide, dedicated to preserving for public education the history of the construction, surface mining, and dredging equipment industries. Publishes Equipment Echoes magazine, operates the National Construction Equipment Museum, and holds an annual International Convention and Old Equipment Exposition.

Liebherr Construction Equipment Co. G-370. Known in the dredging industry for providing powerful hydraulic excavators installed on dredges throughout the world. At CONEXPO-ConAgg, the company will display excavators and shovels, hydrostatic crawler loaders and tractors, wheel loaders, and material handlers for the aggregates, logging and scrap industries. Mobile cranes, crawler cranes, harbor cranes, and state-of-the-art concrete technology equipment are also manufactured by Liebherr.

Linatex Corporation of America. C-6694. Natural rubber products in a comprehensive range of products and services for abrasive processes: molded and fabricated liners, screens, hoses, pumps, hydrocyclones, valves, and technical expertise for mineral processing delivered through an extensive global network.

Marsh Buggies Inc. C-4155. Manufacture, sales, and rental of amphibious excavator undercarriages, marsh buggy personnel carriers, cargo buggies swamp buggies, and customized equipment.

McElroy Manufacturing, Inc. S-794. Polyethylene pipe fusion equipment.

Metso Minterals. C-5635. On display: a Model L36/Frame900 dredge pump (14"x12"x36"), introduced at this show. This re-designed pump includes a wet end using a cantilevered design, which eliminates the case feet and results in reduced assembly time, better wet end support and better pump alignment. The cantilevered design also allows a reduction in impeller overhang which reduces shaft deflection for better packing life.

The dredge pump bearing assemblies have also been redesigned. The Global Bearing Cartridge, incorporated in Metso's X range of slurry pumps takes the place of the traditional two housing design, reducing cost and improving Global availability. The housing is a one piece design to insure its sealing capability over the life of the pump. The shaft diameters have been increased to make a stiffer shaft to reduce deflection. The bearing uses a double row spherical roller bearings, a cylindrical roller bearing, and a steep angle spherical roller thrust bearing. This oil-lubricated bearing can be fitted with end cover seals for underwater as well as above water applications. Bubba Savage will be in the booth to answer all dredging application questions.

National Stone, Sand & Gravel Association. L-3324. Represents the crushed stone, sand and gravel-or aggregates-industries. Member companies produce more than 92 percent of the crushed stone and 75 percent of the sand and gravel consumed annually in the United States.

PearceGroup. C-7189. Foundry producing dredge pumps and other wear parts. Pearce will have an "exploded" pump on display on a turning platform so visitors can see all the parts of the pump and how they are interrelated. Several videos will be running in the booth depicting the company's foundries in Prairieville, Louisiana and Memphis, Texas. Ricky Dawson will be on hand to explain the PVS Compact Aggregate Unit.

Pearce Pump South. C-7189. Lars Bernie Ostervold, will be in the Pearce Group booth describing his company's recently-added fabrication facility, where he offers fast turnaround on custom fabrications and on pump floats, pump bases, booster systems and conveyor feed systems. Ostervold is also a representative for Greystone, and will be in that booth also.

Phoenix Process Equipment Co. S-609b. Systems for separation, classification, thickening and dewatering mineral slurries.

Prolec. S-11017 . Western Latitudes and Prolec UK offer state of the art machine control solutions for the construction market. These cost effective products use state of the art GPS and laser products to help the contractor reduce site development time by as much as 50 percent.

Pullmaster. C-6313. Gary Wong, will have on exhibit a number of winches, including the Model H75 winch, a rapid reverse winch that will pay out cable approximately 4.5 times faster in the reverse direction. Its inherent design features facilitate a smooth operation during the swing application. Pullmaster winches are available with a line pull range of 1,000 to 85,000 pounds, and are available with Rapid Reverse (swing winch and spud winch applications), Equal Speed (ladder winch) and Freefall (spud winch applications.

Ramsey Company Inc. RP-37012. Long line excavator systems capable of mining sand, gravel, slurry, or sludge out to 1800 feet and down 160 feet or more. Provides solutions for situations where the material to be moved is to steep, deep, slippery or unstable to support conventional earth moving equipment.

Rohr Corporation: C-6325. Clamshell aggregate mining dredges. As they have for the past three or four ConAgg shows, Rohr Corporation is hosting a hospitality booth, offering a place for people to gather and share ideas, said Chris Nelson, sales manager. While in the booth, visitors will have a chance to operate the controls in a dredge wheelhouse, and to experience in simulation the automatic, semi-automatic and fully manual operation of the clamshell bucket as it digs sand and gravel. Rohr's bucket monitoring and diagnostic evaluation displays the position of the bucket in real time, as well as vital statistics such as fluid levels, oil temperature and bucket open and close pressures.

ROTONICS. S-16351. Rotonics is introducing new sizes of pipe floats to handle all types of floating line on a dredging project. The new sizes are 24 inch and 26 inch, so now the company provides floats for 6-inch to 26-inch pipe, along with fuel lines and electrical cable floats from 2.5 inch to four inch. Jo Segura, who specializes in dredge line flotation, will be in the booth.

Supreme Manufacturing Inc. GP-51314. Manufacturer of clam dredges and dredge accessories, including clamshell buckets, bottom dump barges and floating conveyors, land conveyors, radial and stacking conveyors, work boats and equipment refurbishing.

Trimble. S-17411, S-10743, S-890. GPS (Global Positioning Systems) , Laser Instruments & Systems, Optical Instruments & Systems, Surveying Equipment & Accessories, Computer Hardware & Peripherals, Construction Management, Cost Management/Estimating/Bidding, GIS/Mapping, Computer Software, Fleet Management Systems

Twinkle Co. C-6765. Specializes in dredging equipment, including the H-Series, L-Series and Prowler. Twinkle dredges have either diesel or electric power and rotary or linear cutters. Other products include the CONVAC S4 suction bypass valve, velocity meters, LCAP automation, LADDERVAC, HOWDEEP and other unique items for dredges.

VMI, Inc. C-4469. Dredges and sludge handling equipment. Started by Gene Maitlen in 1972, this company manufactures dredges for many applications. Gene Maitlen is now CEO of the company and his wife Peggy is the secretary-treasurer. Their two sons Randy and Tony are co-owners of the company and are also officers. Tony is the vice president and sales manager, handling dredge sales, rentals, and leases. Randy is president and handles sales, service, and technical issues. Tim Thee has been with VMI more than 25 years and is purchasing and parts manager. Randy's son Mason is the third generation Maitlen in the business, and assists in machining, fabrication, and assembly of VMI equipment.

Western Dredging Association - WEDA. L-3205. Trade organization for the dredging industry in the Western Hemisphere. The booth will contain information on dredge technology and applications, and provide contacts to answer any question about dredging from buying a dredge to operating a dredge. WEDA members involved in the aggregates industry can be contacted here, including representatives of companies who are attending but not exhibiting at this show.

Western Latitudes. GP-50945. Custom GPS solutions, dealer for HemisphereGPS, NovAtel and Sokkia.



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