Department of Agricultural and Biosystems Engineering

Consulting Agricultural Engineers

AEN-109
Ag Engineering Notes (AENs) are non-reviewed publications for Agricultural and Biosystems Engineering Department
Updated April 24, 2001

CONSULTING AGRICULTURAL ENGINEERS

This list of consulting engineers in or near Iowa was adapted from a listing of registered professional engineers published in the 1997 AE Guide to Consultants, American Society of Agricultural Engineers, and as suggested by Extension Ag Engineers. The information was supplied by the consultants. Neither Iowa State University nor ASAE assume any responsibility for qualifications listed or services performed.

John F. Brimeyer PE
Terracon
870 40th Avenue
Bettendorf, IA 52722
Ph 319-355-0702
Fax 319-355-4789
Email jfbrimeyerterracon.com
Open feedlots.

Wesley F. Buchele, P.E.
Buchele Associates, Ltd.
239 Partridge Circle
Ames, IA 50010
(515) 292-2933 (Home)
FAX: (515) 292-5011
Tractor and machinery design, tillage and harvesting machinery development, land locomotion, soil-plant dynamics, creativity, invention and patents, functional analysis, torque measurements and instrumentation. Safety analysis, accident investigation, accident reconstruction, human factors engineering and assistance with product liability litigation, appropriate technology in developing countries.

Larry E. Christenson, P.E.
Livestock Environment Consultant
903 10th Street
Kalona, IA 52247
(319) 656-3380
Facilities evaluation and planning for beef, dairy, poultry, and swine. Plans, designs, and specifications for new livestock production facilities and renovation. Animal environment design and waste management planning. Grain handling facilities design and farmstead planning. Alternate energy systems evaluation and farm energy audits. Loss investigation and expert witness reports and testimony.

Crawford Engineering & Surveying Inc.
205 2nd Avenue NE
Independence IA 50644
319-334-7077
fax 319-334-7078
email crawengrhxinc.com
Open feedlots.

Robert O. Diedrichs, P.E., C.S.P.
Diedrichs & Associates, Inc.
209 Franklin Street
Cedar Falls, IA 50613
(319) 266-0549
rdiedrichsdiedrichs.ws
Engineering and design of products, machines, and systems. Assembly of prototypes and testing of product
performance and durability. Preparation of technical manuals. Independent studies of market opportunities, evaluation of concepts and preparation of cost estimates. Thirty-five years experience consulting/problem solving related to products, machine controls, manufacturing processes and product safety.

Ivan Droesler
Kuehl & Payer, Ltd.
1725 N. Lake Ave., PO Box 458
Storm Lake IA 50588
(712) 732-7745
Animal Waste management permits and other unspecified services.

Etler Engineers
3002 W. Main St.
Emmetsburg, IA 50536
Animal Waste management permits and other unspecified services.

James F. Gastel, P.E.
J.F. Gastel & Associates Consulting Engineers
3515 South Baileyville Road
Freeport, IL 61032
(815) 232-3506
Planning, design, and construction observation for: farm structures, livestock feeding systems, confinement units, waste treatment, grain drying, soil conservation practices, waterways and drainage, land surveying (licensed surveyor), civil engineering consulting. (BSAE)

John A. George, P. E.
Agricultural Engineering Associates
102 E. 2nd Street
Uniontown, KS 66779
(316) 756-4845
Livestock and crop research; test and production facility; consulting and design including facilities for swine, beef dairy, poultry, horses, and other non-ruminant species; waste management systems; soil and water conservation and resource development; grain and feed storage, drying, and processing facilities; irrigation systems evaluation and design.

Dale M. Gumz, C.S.P., P.E.
Inductive Engineering
602 State Street
Cedar Falls, IA 50613-3346
(319) 266-0566
Engineering consultant for agriculture, construction, consumer products, and specialty machines. Forensic and safety services include: accident reconstruction; design analysis; expert witness; human factors; manufacturing processes, mechanical and electrical, occupational safety; product liability; product and machine design. Experience includes a farm background and 25 years in design, manufacturing, safety and forensic engineers.

Robert E. Haight, P.E.
Diedrichs & Associates
209 Franklin Street
Cedar Falls, IA 50613
(319) 266-0549
Development of new products and machines. Evaluation of concepts by analytical studies and experiemental testing of models. Product design, including preparation of drawints and specifications. Design of power transmission systems for agricultural and construction vehicles. Design of vehicle controls. Safety analysis and forensic engineering. B.S. Mechanical Engineering.

Michael H. Hawkins
Terracon
PO Box 1306
Syracuse KS 67878
620-384-7788
fax 620-384-5379
email mhhawkinsterracon.com
Open feedlots.

R. Bruce Hopkins, Ph.D., P.E.
President, The Hopkins Engineering Co. P.C.
2524 Timber Drive
Cedar Falls, IA 50613-4730
(319) 266-6510
Accident and fire investigations and reconstruction, failure analysis, and machine design involving agricultural tractors and implements, industrial tractors, construction equipment, and consumer products. Expert assistance and witness in accident or patent litigation for either plaintiff or defendant. Farm background, Ph.D. in agricultural engineering, 30 years experience in farm equipment and other product engineering, experience in teaching machine design, and consulting experience.

Jacobson Westergard & Assoc.
105 S. 6th Street
Esterville IA 51334
712-362-2647
712-362-2668
jwarconnect.com
Open feedlots.

Dennis J. Johnson & Assoc. Inc.
P.O. Box 453
4410 10th St
Windom, MN 56101
Ph: (507) 831-2703
Fax: (507)831-5271
Email: tthurmerrconnect.com
Open feedlots. Animal Waste management permits and other unspecified services.

Norman L. Klocke, Ph.D., P.E
NLK Engineering
122 Wellesley Ct NW
Cedar Rapids, IA 52405-4429
Ph: (319) 396-3140
Fax: (319) 396-3140
Email nlkenginav.net
Open feedlots. Irrigation project feasibility, design, layout & management. Ag water quality management assestment. Engineering support for water litigation. Evaluation of water policy.

Joseph G. "Jake" Martin III, P.E., M.S.
JGM III
6024 SW 89th Ter
Gainsville, FL 32608
(352) 371-4655
Animal waste management system design; agricultural facility design and planning; dairy facility design and planning.

McClure Engineering
705 1st Avenue, N.
Fort Dodge, IA 50501
(515) 576-7155
Animal Waste management permits and other unspecified services.

Robert L. Mensch, P.E.
Mensch Engineering
2500 Albion Avenue
Fairmont, MN 56031-3304
(507) 235-9151
Consultation and design of livestock and poultry facilities for research, production, and industrial applications, including site development, housing, and environmentalcontrol, waste handling, utilities, feed processing and storage. Services include full plans, specifications, and contract administration. Registered: agricultural, civil, and structural engineer and building inspector.

Rodney M. Nohr, P.E.
Nohr Engineering
307 1/2 Walnut Street
Yankton, SD 57078-4344
(605) 665-1214 Fax: (605) 665-8060
Agricultural, structural, environmental and industrial worldwide experience, especially in Mexico, Venezuela, Argentina and China. Includes bulk materials handling, storage, and processing; bins and silos; concrete jump and slip, steel, wood, fiberglass and correugated steel. Accident and failure investigations, machine and equipment design, reconstruction testing and reporting, product evaluations and technical writing.

Eva Schmitz, P.E.
Terracon
600 SW 7th Street, Suite M
Des Moines IA 50309
Ph: 515-244-3184
Fax 515-244-5249
Email esschmitzterracon.com
Open feedlots.

Paul Sharp, P. E.
Bolton & Menk, Inc.
2730 Ford St., PO Box 668
Ames, IA 50010-4930
(515) 233-6100
Design of water supply systems and livestock waste treatment/storage/handling systems including permits.

Vance & Hochstetler, PC, Consulting Engineers
71 E. Jefferson Street
Winterset, IA 50273
(515) 462-3995
Animal Waste management permits/ other unspecified services.

Mike Veenhuizen, Ph.D., P.E.
Livestock Engineering Solutions
2925 S. Honey Creek Road
Greenwood IN 46143
Facilities design including site selection, structural design, environmental control, and waste management.

Jim Warner, P.E.
Warner Engineering Assoc. Inc.
201 S. 23rd Street
Fairfield, IA 52556
515-472-5581
Animal waste management permits/ other unspecified services.

Jerry L. Wille, P.E.
President
Curry-Wille & Associates, Consulting Engineers, P.C.
P.O. Box 1732
Ames, IA 50010
(515) 232-9078
Consultation on agricultural experiment stations, commercial, and private facilities, housing livestock and poultry or storing grain and seed. Services include designs, plans, and specifications for the general, structural, mechanical, and electrical portions of the projects, including site development, utilities, and waste handling.

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