Accident Investigation and Reconstruction Expert Witnesses: 84

Principle Forensics is a national Media Forensics Laboratory. They Recover, Authenticate, Enhance, and Analyze all types of recorded evidence, including Video, Audio, and Digital Images. Principle Forensics backs all their work with experienced, highly trained, expert testimony.

Nick Barreiro, BAC, AVFA, DIVRT, AFCE, Chief Forensic Analyst, is a Certified Audio Video Forensic Analyst and an FBI-trained member of the Digital Imaging and Video Recovery Team. During his 15-year law enforcement career, he was a patrol sergeant, technology project manager, media forensics expert, detective, digital evidence specialist, and patrol officer. Prior to his career in law enforcement, Mr. Barreiro was an audio engineer and producer in California. He also worked for KBMB radio in Sacramento and has extensive experience and training in audio enhancement and analysis.

Mr. Barreiro works with attorneys representing plaintiffs and defendants in civil or criminal matters in which Audio, Video, or Image Evidence plays a key role. He has tremendous technical knowledge and training, but also extensive experience on the witness stand.

Mr. Barreiro has conducted hundreds of forensic audio, video, and image investigations in the United States and internationally. He has enhanced and analyzed thousands of digital files, ranging from simple slip-and-fall cases and minor traffic accidents to complex investigations such as homicides and officer-involved shootings. He has been court-certified as an expert and provided expert testimony in criminal cases and civil litigation in federal and state court. A highly trained and experienced forensic analyst, he provides technically detailed and precise results with expedited turnaround times.

Video, Audio, and Image Forensics

POWERPLANT Specialists, LLC., (PPC) is a technical services company providing highly specialized support services for Industrial Power Generation Systems, Cogeneration and Combined Cycle Power Plants. PPC specializes in Design, Performance, Forensics, Construction, Design Defects, Cost Analysis for Lost Operations, Maintenance, and Repair. PPC has extensive international experience and is OSHA Lockout / Tagout Certified. Areas of Expertise

• Power Generation
• Marine Propulsion - Conventional / Alternative Fueled Systems
• Microturbines
• Boilers
• Industrial Gas Turbines
• Diesel Engines
• Cogeneration
• Geothermal
• Landfill
• Digester Gas
• Insurance Claims Investigation

Pool Operation Management (POM), founded in 1980, is an Aquatics Safety and Risk Management firm that is nationally recognized for pool consulting services including liability and risk management, compliance with governmental regulations, facility operations, mechanical questions, and personnel requirements. Trevor A. Sherwood II has extensive experience in the swimming pool industry, with 30 years of experience in service, consulting, training and education, code/regulations development, and expert witness. He has contributed to aquatic textbooks and related articles, influenced State Recreational Bathing Codes, and presented at national industry conferences. He has provided leadership to such organizations as National Swimming Pool Foundation (NSPF), Northeast Spa & Pool Association (NESPA), Community Association Institute - New Jersey Chapter (CAI), New Jersey Apartment Association (NJAA), New Jersey Parks and Recreation Society (NJPRS), Pennsylvania Parks and Recreation Society (PRPS) and New Jersey and Massachusetts Health Departments. He has been retained by attorneys for both Plaintiff and Defense. Mr. Sherwood's extensive swimming pool consulting experience qualifies him to appear in court on the following matters:

View Consulting Profile.

Greg Coulson is an Equestrian Expert Witness and Consultant with 50 years of professional equestrian experience.  He has trained horses and people across the United States in a wide variety of equestrian activities.  He has organized and managed large and small equestrian education programs, clinics, trail rides, camps, and competitions.  He is also past Instructor, Course Designer, Rally and Exam Organizer, District Commissioner and  Regional Supervisor of the United States Pony Clubs Inc.  He continues to own and operate a full service equestrian center.

Education/Training: BS Animal Science, U.C. Davis BA Anthropology, U.C. Davis MA Educational Leadership, Cal State, Northridge CA Community College Instructor's Credential, Horsemanship.

Awards/Honors: Selected to be Cross Country Fence Judge for 1984 Olympic Games; Trained and coached the 1985 United States Eventing Association's Reserve National Champion Young Rider (Fritz Cup); Trained and coached the highest scoring rider / horse in Dressage at 2014 United States Pony Club Championships; Trained and coached numerous high placing teams in USPC National Championships

Litigation Support - Greg Coulson has been an Equestrian Expert since 2010 with experience in accident reconstruction, writing reports, and testifying in depositions, arbitrations, and trials for both plaintiffs and defendants. He is available to analyze and explain equine industry standards, horse behavior, equestrian accidents, situations, and issues. Mr. Coulson can organize complex sets of facts to provide logical descriptions for attorneys, judges, and juries. He combines extensive education in horsemanship, science, and teaching with a wealth of practical experience.  He is impartial, unusually clear, and articulate.  

Areas of Expertise:

D. Larry Dunville has over 45 years of Overhead Crane experience. Mr. Dunville has built, installed, engineered, estimated, sold, and serviced overhead bridge cranes. He has sat on the industry committees that wrote the crane specs for the steel industry, written articles, and taught professional architects and engineers about the special requirements required when designing buildings that will house overhead cranes. Larry was formerly the Executive Director of the Crane Certification Association of America and is currently on the ASME/ANSI B30.2 Overhead and Gantry Cranes Committee, ASME/ANSI B30.16 Overhead Hoists, and AIST (American Institute of Steel Technology) TR-13 Guide for the Design and Construction of Mill Buildings.

Business Experience

Mr. Dunville was the Owner and president of Dearborn Crane & Engineering Co., a builder and installer of overhead cranes and crane runway systems, from 1975 to 2012.  Mr. Dunville is the Owner and President of Overhead Crane Consulting, LLC (2016 to present). 

Speaking Engagements

Larry speaks on crane safety, crane inspection, and runway design. In the last year, he has spoken to AIST (American Institute of Steel Technology), CCAA (Crane Certification Association of America), CMAA (Crane Manufacturers Association of America), and FEWA (Forensic Expert Witness Association). 

D. Larry Dunville's Video Introduction 

Litigation Support—Larry Dunville offers expert witness services in crane cases involving industrial, manufacturing, mining, warehousing facilities, and power plants. His expertise is available to counsel representing both Plaintiffs and Defendants. 

Areas of Expertise:

View D. Larry Dunville's Consulting Profile.

Mari S. Truman, PE, has more than 40 years of experience in Orthopedic Product Design and Development. As Principal Engineer with her company, Orthobiomech, LLC, she acts as an R&D design and development consultant to the orthopaedic industry and an injury biomechanics and medical device forensic expert. Ms. Truman's design experience includes implants and instrumentation systems used to repair fractured bones, torn ligaments and/or to reconstruct spine, knee, wrist, hip, ankle, elbow, thumb based cmc, and other finger and toe joints for many of the USA based orthopaedic conglomerates and a few Asian, Australian and European firms. Having designed and developed implants and instruments used for both human joint reconstruction and skeletal trauma repair, Ms. Truman is named on 12 Orthopaedic Patents and frequently gives talks on implant design and injury biomechanics on topics such as: knee and thumb-based joint surfaces and kinematics, joint design, rapid prototyping, medical device design control, and injury biomechanics. Litigation Support - Ms. Truman has been providing Forensic Impact and Injury Biomechanics and Orthopedic Biomechanics to the legal industry for over 15 years. She draws on her strong knowledge of FDA and ISO EN13485 compliant design control processes, failure modes and effects analysis, clinically relevant tissue loading, and design safety assurance, including device performance requirements and warnings, during her medical device litigation reviews. Ms. Truman has a strong knowledge of the production and quality assurance processes used in the manufacture, cleaning, and sterilization of medical devices and the effects of such processes on product performance. Analysis of Traumatic Injuries Related To:

View OrthoBioMech LLC's Consulting Profile.

John L. Ryan, BSME, P.E. is a Mechanical Engineer who provides general Mechanical and Structural Engineering expertise. Mechanical and Safety Engineering (MASE) provides full service analysis and accident reconstruction of products involved in accidents. 

Mr. Ryan's services have been requested for attorneys and insurance companies needing forensic engineering expert witness testimony to determine whether machinery and products involved in injury cases were adequately designed or whether they have a Design, Manufacturing, or Material Defect. All products are lab-tested on site to determine adherence to industry standards and engineering design protocol. Alternate preventative designs are developed when none exist commercially. 

Mr. Ryan is available for both Plaintiff and Defense, depending on the individual case. His services include producing high quality reports and visual aids in the courtroom such as scale models to help explain accident scenarios and alternate designs to judges and juries. 

Areas of Expertise:

• Accident Investigation and Reconstruction
• Machine Guarding Accident Investigation
• Climbing Gym Accidents
• Belay Device Failure
• Rock Climbing Accidents
• Fall Protection Failures
• Ladder Failure Investigation
• Tree Stand Failures
• Industrial Accidents
• Power Press Accidents
• Connection Failures
• Bolt Failures
• Weld Failures
• Testing Products to Industry Standards to Determine Compliance
• Design Defect Analysis
• Structural Analysis of Buildings
• Product Liability Investigations
• General Engineering Injuries and Issues
• Industrial safety
• Engineering Continuing Education
• Product Certification

View John Ryan's Consulting Profile.

Illumination Engineer, consultant, teacher, inventor, forensics investigator, and expert in lighting.   My 30+ years of experience has immersed me in different facets of the lighting industry.  I have worked for companies that cater to lighting design, lighting equipment manufacturing, 3d modeling lighting software, sales and service including post occupancy evaluation. My design experience includes indoor/outdoor lighting, safety and security, lighting and human health, glare, roadway lighting, sports lighting, and lighting standards.  Since 1999, I have been involved with standard writing committees within the Illuminating Engineering Society (IES).  For the IES, I served on 13 IES committees, of which was the chair of 7 of those committees producing over 11 standards documents.  

Teaching has also been a part of my career, instructing diverse groups from high school students to seasoned lighting professionals allowing these individuals to understand the concepts on their level.  In my practice, I have designed over 8000 designs in addition to teaching over 5000 students in my courses and presentations on lighting design, illumination engineering and the lighting industry.  I am a certified instructor for IES SEM courses, am a Lead instructor for the IES Street and Area Lighting Conference (SALC), as well as the SALC Education Coordinator from 2010 to 2019.  The University of Colorado  guest lecturer for three years.  I have authored several lighting courses and seminars as well as presenting them.  

View Matthew Hartley's Consulting Profile.

Tim A. Martin has more than 48 years of industry experience and is the leading Mine Safety Expert in the US. He provides litigation support as an expert witness and mine safety consultant, assisting the legal community in navigating through complicated mine safety cases.

Mr. Martin’s vast experience in investigating mining accidents, as well as major mining disasters, has placed his experience in high demand to provide mine safety consulting and expert witness services to numerous law firms across the US.

Litigation Support - Mr. Martin serves as an Expert Witness and Litigation Consultant for numerous pivotal Civil and Criminal Cases throughout the United States. He also provides expert safety consulting services to the Metal Non-Metal mining industry, the Coal Mining Industry and the Aggregate and Stone Mining Industry including Gold, Silver, Copper, Iron Ore, Bituminous Coal, Anthracite Coal, Lignite Coal, Stone, Sand and Cement operations throughout the United States and South America.

Areas of Expertise:

Background Experience - Tim Martin has been navigating complex MSHA and OSHA regulations in mining cases for decades. His expertise spans various mining types across the US and South America, including coal, gold, silver, and ore operations, among others.

Mr. Martin's involvement in the mine rescue community and direct participation in notable disaster recoveries, such as the Sago and UBB Mine Disasters, highlight his hands-on experience. He played a pivotal role as the lead mine safety expert in high-profile criminal cases and civil litigations, covering issues like respirable dust exposure and hazardous materials. With numerous safety certifications and recognition for his contributions, Mr. Martin has designed top-tier health and safety educational programs acknowledged by the US Department of Labor.

LECS (UK) Limited  is an International Engineering Firm specializing in Lifts, Escalators, Facade Access and Funiculars (cable cars). With over 20 years of trading history, their specialized engineers are qualified, experienced and carry full professional insurances. Members of the engineering team have all worked for major contractors and have held positions including Senior Engineer, Project Manager and Commissioning / Test Engineers. As a result, LECS has over 150 years of accumulated experience within the key staff of the engineering team and currently employs 10% of the world’s graduates of the MSc in Lift Engineering from the University of Northampton.

LECS (UK) Limited is a member of independent bodies such as ACE, BSI and ConstructionLine. They have an accredited Quality Assurance scheme to ISO 9001 (2008) and are regularly audited. They provide services for many market sectors including overseas projects, hotels, retail, commercial health, local authority and heritage. The engineers at LECS (UK) have extensive experience as Expert Witnesses and Consultants in litigation involving lifts and escalators. Their services include preparing expert reports in accordance with Regulation 35 of the Civil Procedure Rules and also in Criminal cases. They are also available for adjudication and arbitration cases. LECS (UK) expert witness services have been called on in overseas situations including Gran Canaria, Dubai, Hong Kong, Spain and Turkey.

Services Include:

• Expert Witness - Litigation Support
• Statutory Inspections
• Maintenance Audits
• Acquisition & Condition Surveys
• Project Management
• Traffic Analysis
• Risk Assessments
• New Installations & Modernization Specifications
• Maintenance Specifications
• Training
• Portfolio Management

• Locus Reports
• Personal Injury Photography Reports

• Interpretation
• Translation
• Witness Statements
• Document sign up service

The four PhD and registered PEs at Miller Engineering are celebrating 40 years of Professorships at three universities along with providing services to Government, Insurance, and Industry—through research, publications, presentations, and expert testimony. We have a dedicated office with a full time staff of engineers, researchers, and technical writers. The span of our collective academic and experiential expertise covers well the Mechanical, Electrical, Chemical, Agricultural, Industrial, Human Factors, Ergonomic and Safety fields of engineering. The areas listed below are from actual projects completed in our 40 years of history. 

Summary

Stephen (Steve) T. Hopper, PE, is Founder and Principal of Inviscid Consulting. Over more than three decades, Steve has helped hundreds of clients plan and streamline their warehousing, logistics, manufacturing, and distribution operations by driving down operating costs, boosting capacity, improving service levels, mitigating risk, implementing effective supply chain solutions, emphasizing safety, and enhancing the performance of their supply chain resources: people, processes, inventory, facilities, equipment, material handling systems, transportation assets, and supply chain information technology (IT). He has worked with clients ranging from small businesses to Fortune 100 corporations.

Steve earned a Bachelor of Industrial Engineering (BIE) degree from The Georgia Institute of Technology (Georgia Tech) and is a board-certified, licensed, registered Professional Engineer (PE). He has served as an expert witness on dozens of cases involving supply chain operations in the US, Canada, and Australia and has advised private equity and venture capital investors. He has also been interviewed by the supply chain industry media, authored articles for industry publications, and spoken at industry events.

Industry Experience

• 3PL / Outsourced distribution and fulfillment
• Apparel / Footwear
• Building materials
• Consumer goods
• Direct-to-consumer / Ecommerce / Catalog
• Food / Beverage / Grocery
• Furniture
• High-tech / Electronics
• Industrial / Automotive / Aerospace
• Mining / Drilling
• Pharmaceutical / Health and life sciences
• Rentals
• Retail
• Reverse logistics / Returns
• Wholesale / General distribution

Supply Chain Solutions Expertise

• Warehouse management systems (WMS)
• Warehouse control systems (WCS)
• Warehouse execution systems (WES)
• Slotting and order picking systems
• Transportation management systems (TMS)
• Labor management systems (LMS) 
• Order management systems (OMS)
• Voice and automatic identification systems
• Equipment, automation, robotics, and software used for handling, packaging, storing, and transporting materials
• Logistics network design & optimization software tools

Education, Certifications, and Associations

• Bachelor of Industrial Engineering (BIE), The Georgia Institute of Technology (Georgia Tech)
• Board-certified, licensed, registered Professional Engineer (PE)

Rod Bergen has an extensive education and background in Horse Behavior and Horsemanship. Mr. Bergen is nationally certified as an Advanced (Level III) Horseback Riding Instructor by the American Riding Instructors Association (ARIA) in Dressage, Recreational Riding and Mounted Patrol. He has owned and managed horse training, breeding and boarding facilities for over 30 years. He is a Certified Equine Appraiser and member of the American Association of Equine Appraisers. 

Mr. Bergen is qualified to testify as an Equine Forensic Consultant in the California Superior Courts. He has served as a Horse Expert in over 40 legal cases (including 5 deaths) involving horses and horse facilities. Mr. Bergen is listed with the L.A. County Bar Association as an Equine Forensic Consultant / Expert Horse Witness. Specialties:

• Personal Injury & Property Damage
• Equine Accident Reconstruction
• Horse Facility Evaluations
• Riding Equipment Suitability
• Horsemanship Safety Standard of Care
• Equine Problems & Personal Liability Issues During Competitions
• Trail Riding
• Parades

View Audio Video Design Expert Witness Profile.

View Solar Energy Expert Witness Profile.

Meyer R. Rosen, FRSC, FAIC, CPC, CChE, is a leading creative consultant for the Legal Profession and specialty Chemical / Personal Care Industries. He is the Founder & President of Interactive Consulting, Inc. (www.chemicalconsult.com). 

Meyer is a Forensic Litigation expert for both plaintiff and defense in hazardous chemicals, products liability, personal injury, spa injuries, bleaching, hair coloring, fires and explosions, intellectual property and trade secret cases. He also provides Technical Marketing, New Business Development, Technical Consulting and Professional Editing services internationally to the Specialty Chemical, Personal Care, Cosmetic, Pharmaceutical, Medical Device, and Allied Industries. 

Meyer also has 15 years of experience as a Professor of Fire Technology at Westchester Community College. Mr. Rosen is Editor- in- Chief of Harry’s Cosmeticology, 9th Ed. A 2,600-page trilogy on all aspects of the cosmetic industry (www.harryscosmeticology.com)’ as well as being Emeritus-Editor-in-Chief for EuroCosmetics magazine (Germany) and Editor-in-Chief of the Delivery System Handbook. 

Technology Expertise (Intellectual Property/Chemical Industry): Mr. Rosen provides consultation and litigation support in patent infringement, trade secret issues, and licensing matters. His scientific areas of expertise include, but are not limited to:

• Organosilicones: Surfactants, Emulsions, Foams, Antifoams, Silane Coupling Agents
• Water Soluble Polymers, Poly(ethylene oxide), Polyethylene Glycol, and Poly (acrylamide) and Water Insoluble Polymers
• Colloid and Surface Chemistry: Stability of Dispersions, Wetting & Spreading Phenomena, Suspensions & Emulsions, Clays, Paint & Coatings, Personal Care, Cosmetics
• Flocculating and Coagulating Agents
• Applied Rheology, Rheology Modification of Aqueous & Non-Aqueous Media

Certifications:

• Chartered Chemist and Fellow: Royal Society of Chemistry – London
• Nationally Certified Professional Chemist and Professional Chemical Engineer
• Fire and Explosion Expert (Advanced Training)
• Fellow: American College of Forensic Examiners
• Fellow: American Institute of Chemists
• Diplomate: American Board of Forensic Examiners
• Diplomate: American Board of Forensic Engineering and Technology

View Meyer Rosen's Consulting Profile.