Aggregate Machinery Specialist is a closely held California corporation started in 1988 to service predominately the aggregate and construction industries. Later in 2003 Aggregate Machinery Inc. was established in Arizona to better serve Arizona, Nevada, New Mexico, and Hawaii.

We are proud to represent quality suppliers and manufacturers that include:
  • Advanced Detection Systems
  • Buell Classifiers
  • Deister Machine Co.
  • Hazemag USA Inc.
  • Masaba Mining Equipment
  • Polydeck Screen Corporation

We also have OEM (original equipment manufacturer) agreement with the following as well as many others:
  • PugMill Systems
  • FL Smidth Krebs

All agreements are subject to territorial limitations. Through the years we have had both in house engineering and fabrication. Currently we use subcontractors for both. Installation is done by outside contractors both union and non-union to meet the customer’s needs.

Used equipment is usually available. The primary source being our rental return equipment. Customer trade-ins, direct purchase, and auctions are also sources for equipment. We maintain a data base of used equipment as well as working with other dealers in the United States in an attempt to meet our customers' requirements.

Our Work

We enter into discussions conversations with our potential customers and listen to what their needs, problems, and budget entail. This can range from something relatively easy such as sizing a piece of equipment, or making customer specific recommendations, furnishing the necessary drawings, expediting delivery, helping during installation, being there at start-up, and periodic operational checks.

Valuations and SMARA

Through John Mulligan, an accredited senior member of the American Society of Appraisers, the company is able to furnish Appraisals as well as valuations for the Surface Mining and Reclamation Act. All work is done on a confidential basis. This can be as simple as a single piece of equipment to NYSE company buyouts. Contact us for details.


While not a primary aspect of our business we have supplied parts and equipment as well as complete plants in Ecuador, Australia, Philippines, Guatemala, Honduras, and Saudi Arabia.

Here are just a few examples of different applications, equipment and projects:

Pacific 20x20
Added a crushed rock circuit to an existing sand and gravel operation for the processing of imported quarried rock. Furnished all engineering, drive overs, stackers, screens, structures, conveyors, less the crushers
Pacific 20x20
Upgraded the customer's existing wash plant utilizing Polydeck screen media and adding Phoenix Process belt presses, chemical system and automation.
Working with the customer we developed the flow sheet and general plot plan. Bid drawings for major structures were developed and completed. We furnished the screens, dewatering screens, cyclones, radial stackers and the clarifier system. Plant was completed basically on time and within budget.
Phoenix Process Clarifier with chemical system and water storage tank handling 10,000 - 12,000 GPM with some 200 TPH of solids.
Another long time customer of Aggregate Machinery, dating back to 1973. Have furnished new and used equipment, Deister screens, washing equipment, belt presses, Phoenix clarifier along with much of the general plant parts or equipment.
Have worked with this customer since 1975 providing engineering, crushers, new and used equipment, Deister screens, tunnel feed systems, extendable radial stacker, belt presses, clarifier, and appraisals. Relationship still continues today with the next generation of managment.

Typical Screen Installations

Deister 8'x20' rinse screen station following log washer
Deister 6'x16' double deck heavy duty scalper ahead of jaw crusher.
Deister 8'x24' fully enclosed triple deck with dust enclosure, access on top of screen.
Portable 8'x20' horizontal triple deck, triple shaft plant.
One of three Deister Horizontal 8'x20' screens selected to replace competitor's three year old units.
Deister 7'x12' Dewatering screen with structure designed to fit existing plant layout.
Deister dewatering screen replacement deck with Polydeck screen support grids.
Retrofitting batch type asphalt plant with new Deister 5'x16', 3 1/2 deck enclosed screen. (watch picture, no VMC allowed can edit or crop)
Plant modifications with dual Deister 8'x24' triple deck incline screens, dust collectors, structures and Superior conveyors.
Deister 8'x20' four deck incline screen. Concrete aggregates wash system structure, Krebs cyclones, Deister 5'x8' dewatering screen.
Deister 8'x20' two deck horizontal wash screen and structure. Designed to fit into existing plant configuration.
Portable, wheels removed, Deister 8'x20' triple deck screen plant.
AMS Superior/Deister portable rip rap feeder grizzly plant, making 3 products.
Deister 6'x12' dewatering screen, with standard depth of bed of material.
Deister 7'x12' dewatering screen and structure, designed to fit in existing plant.
Deister 5'x10' USM two deck asphalt plant scalping screen and structure.

Conveyor Installations

New crushed rock primary screen station with Superior conveyors and Deister screen.
Superior 300' modular tunnel system - shipped pre assembled with feeders, reclaim conveyor in 40' sections.
Custom built and designed concrete batch plant feed conveyors.
36"x150' Superior Telestacker on recycle project, located in between traffic on highway median.
36"x125' Superior portable stacker, leased to customer when plant conveyor was destroyed by third party.
36"x150' Superior Telestacker installed for larger stockpile and drying time of material.
Sewage treatment plant thickened solids being loaded into truck.
In plant 30"x100' Superior radial stacker
Portable crushing plant using Superior Telestacker for increased product storage.

Hazemag Horizontal Shaft Impactor Crushers

Hazemag 1320, 300 HP crusher, operating in a "rare earth" mine.
Hazemag 1006 crusher processing old, stale, expired beer, soft drinks water etc for recycling.
Hazemag 1622 operating as primary/secondary crusher used to reduce feed to -3" and eliminate soft particles

Fines Recovery

Phoenix Process 85' thickener, automation, chemical system and 60' clean water tank.
Phoenix Process 40' thickener, automation, chemical system and 40' clean water tank.
Two Phoenix Process 3.0 meter, skid mounted belt filter presses.
Krebs Cyclones removing excess -270 mesh material prior to washing