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RIP RAP or REVETMENT STONE is larger stone used to stabilize slopes, protect shorelines, and control erosion around bridges and culverts. High Quality Ordovician Revetment Stone Ordovician Limestone is some of the oldest, and highest quality
Limestone in Iowa. Found only in the Northeast corner of the
state, Pattison Revetment stone (RipRap) is the highest quality
Certified Revetment Aggregate
Pattison's state of the art Trommel produces the finest Materials used to stabilize slopes, protect shorelines, and control erosion around bridges and culverts. State-of-the-art Trommel Screening System Pattison Revetment stone is produced by our
state of the art trommel system. This remarkable system
sorts high quality RipRap into specific sizes for various
erosion control needs.
Pattison Company Produces the highest quality DOT approved Ordovician Limestone Rip Rap. Highly Efficient Workflow Expert Material Handling The less material is moved from place to place, the more material
quality is preserved. From blasting, to sorting, to stocking and loading
our state of the art production system ensures the highest quality
material at the lowest cost.
Pattison RipRap is loaded directly on to ore cars extending directly in to the quarry. Direct to Rail Fast & Efficient Load Out Our recent rail spur expansion extends multiple rail lines directly
into our aggregate production plant. This drastically reduces
transportation costs associated with aggregate delivery.

DITCH LINER - Ordovician Dolomitic Limestone

DITCH LINER Also called REVETMENT STONE, is larger stone used to stabilize slopes, protect shorelines, and control erosion around bridges and culverts. Because of performance requirements, the best DITCH LINER is produced from High Quality Ordovician Dolomitic Limestone. Pattison produces some of the highest grade products with our new, state-of-the-art trommel technology. This system yields a superior, rounded, perfectly sized stone that interlocks for maximum stabilization. 

Ditch Liner

Pattison produces a variety of sizes that meet various local, state and federal project specifications.

RipRap Performance Characteristics

Due to the performance requirements that typical applications demand, quality DITCH LINER is certified by the Army Corp of Engineers, state geologists, and Department of Transportation engineers.

How We Produce Ditch Liner

Also known as Revetment StoneRipRapErosion Stone, Granular Filter, Gabion Stone, Armor Stone, Quarry Run, and Macadam Stone. Pattison produces these products using our state of the art trommel processing plant installed at the Clayton, Iowa facility in the summer of 2018.

With Ditch Liner, Age Matters

When it comes to rocks, age matters. This means that Pattison’s Ordovician Dolomitic Limestone is some of the oldest and hardest material in Iowa. Due to it’s hardness and other ‘Old Stone’ properties, our products out perform material produced from outside of the Ordovician Limestone region which is found only in the northeast corner of Iowa. See what Wikipedia has to say on this topic

More about Ordovician Dolomitic Limestone

When it comes to rock, age really matters.  Ordovician Dolomitic Limestone is some of the highest quality, hardest and most durable anywhere in Iowa. Ordovocian formations are only found in the northeast portion of Iowa. Pattison’s Clayton, IA quarry site is right in the middle of it.

Revetment Stone Certifications

CertificationsSizesTech SizeMaterial Type
Iowa DOTMacAdam
Dolomitic Limestone
Minnesota DOTMNDOT Class II
Dolomitic Limestone
Nebraska DOTNEDOT Type A
Dolomitic Limestone
Army Corp of EngineersDolomitic Limestone
Canadian Pacific RailroadDolomitic Limestone

Revetment Stone Properties

Abrasion28% to 34%
"A" Freeze1.0 to 2.0
Secondary Pore Index13 to 24
Insoluble Residue1.03% to 2.89%
100 Cycle Freeze-Thaw.5% to 2.2%
Specific Gravity2.65 to 2.71
AASHTO (T103).20%
CRD (C144 Freeze-Thaw).23%
Disclosure: The information presented above is to the best of our knowledge accurate based on testing by certified independent laboratories. Any recommendations or suggestions are made without guarantee since conditions and/or material handling are out of our control. Pattison warrants that purchased product will meet the specifications set forth by the buyer.

Logistics second to none

Pattison recently completed its Rail Spur project, extending multiple rail lines directly into our new state-of-the-art aggregate production plant!.

Pattison’s advanced direct to rail load out system, coupled with the Pattison rail spur allows aggregate products to be loaded directly from the production plant on to enclosed rail ore cars for delivery.  Eliminating excess handling saves costs, and insures a higher quality product.

Pattison Direct to rail load out

State-of-the-art trommel system

Pattison’s state-of-the-art trommel revetment production system is state-of-the-art, producing some of the highest quality Ditch Liner.

Material is separated into various required sizes without inducing fractures, while yielding a refined individual rack shape that is the most desirable for tight compaction and stability. Pattison’s new Trommel system produces Ditch Liner of exceptional quality

Pattison's state of the art Trommel produces the finest Materials used to stabilize slopes, protect shorelines, and control erosion around bridges and culverts.

Pattison High Quality Aggregates and Proppants

Pattison produces high quality ordovician dolomitic limestone Aggregates and silica proppants.  Our Clayton IA, quarry contains multiple limestone ledges yielding material with a variety of properties that meet various requirements.  Our products are certified for use by multiple state Departments of Transportation, and the FAA.

Revetment Stone

Asphalt Stone

Ballast Stone

Concrete Stone

Clean Stone

Fine Aggregate



Specialty Products

Contact our Aggregate Sales Team for more information!

Contact our Aggregate Team Now!

Our quarry is located in Clayton, IA. We are one of the only sources of Aggregates and Proppants that can load directly to Rail, Truck or Barge from the same facility! Our logistic & delivery systems out pace our competitors. We’d love to hear from you!

Contact information

Aggregate Team

:  (563) 964-0106

: AggInfo@pattisonsand.com

Main Office

701 1st Street
Clayton, IA 52049

: (563) 964-2860

: info@pattisonsand.com

Operations Office

24312 Mississippi Rd., Clayton, IA 52049

Hours of operation

Office Open Monday – Friday: 8am to 4pm
Operating Hours – 24/7