Skip to main content
John Hamilton
J
John Hamilton
Accepting select engagements

Licensed Mechanical Engineer & Expert Witness | Advanced Instructor, University of Arkansas

Licensed PE & Expert Witness Specializing in Machine Safety, Product Liability & Mechanical Engineering. Serving attorneys and counsel nationwide from Mountainburg, Arkansas since 2002.

Daubert-tested
Reports and depositions
33+
Years of Engineering Experience
70+
Depositions
15+
Trials
Practice

Areas of Expertise

01

Mechanical Engineering

02

Machine Guarding

03

Product Liability

04

OSHA Compliance

05

Lock Out Tag Out (LOTO)

06

Warnings & Hazard Analysis

07

Injection Molding Machines

08

Blow Molding Machines

09

ATV/UTV Failures

10

Mechanical Power Presses

11

Pressure Vessels

12

Lawn Mower Stability

13

Design for Safety

14

Industrial Accident Investigation

15

Agricultural Machinery

Engagements

Representative Matters

Product Liability

Injection Molding Machine — Product Liability & Machine Guarding

Provided expert analysis on machine guarding deficiencies and OSHA compliance failures involving an industrial injection molding machine.

Testifying Expert
Product Liability

ATV/UTV Failure — Personal Injury

Evaluated alleged design and manufacturing defects in ATV/UTV equipment contributing to operator injury, including assessment of UTV lift kit modifications.

Testifying Expert
Industrial Accident

Mechanical Power Press — Industrial Accident Investigation

Analyzed machine guarding adequacy and Lock Out Tag Out (LOTO) compliance in the context of a serious industrial press injury.

Testifying Expert
Product Liability

Lawn Mower Stability — Product Liability

Assessed stability characteristics and warnings adequacy of a residential lawn mower alleged to have caused injury on sloped terrain.

Testifying Expert
Industrial Accident

Agricultural Machinery Guarding — Personal Injury

Examined guarding design and regulatory compliance for agricultural equipment including seed carts and sod harvesters in personal injury litigation.

Testifying Expert
Patent / Product Liability

Blow Molding Machine — Patent & Product Liability

Provided technical analysis of blow molding machine design and operation in both patent and product liability proceedings.

Testifying Expert
Engagement

Frequently Asked Questions

Hamilton handles product liability, patent, and criminal cases involving mechanical machinery and systems, including machine guarding, OSHA compliance, ATV/UTV failures, injection and blow molding machines, and agricultural equipment. He has served as a testifying expert in both deposition and trial settings for over two decades.

Yes — Hamilton is available in both consulting and testifying capacities. His practice, John Hamilton Engineering, LLC, has provided expert services on mechanical engineering matters since 2002.

Hamilton has testified at more than 70 depositions and over 15 trials. His experience spans federal and state cases across a wide range of mechanical engineering subject matter.

Hamilton holds a Master of Science in Mechanical Engineering from the University of Arkansas and is a Licensed Professional Engineer in Arkansas. He currently serves as an Advanced Instructor in the University of Arkansas Mechanical Engineering Department, where he teaches courses including Design for Safety and Machine Element Design.

Hamilton regularly applies OSHA standards, ANSI machine safety standards, and Lock Out Tag Out (LOTO) regulations in his analyses. He also has deep familiarity with product warnings requirements, hazard analysis methodologies, and design-for-safety principles.

Hamilton is based in Mountainburg, Arkansas, and is available to consult and testify on matters throughout the United States.

Request a Consultation with John H. Hamilton, PE

Retain an experienced Licensed Professional Engineer and seasoned expert witness for your mechanical engineering matter. Contact John H. Hamilton, PE to discuss your case.

John Hamilton© 2026 John Hamilton
Powered by Exlitem