Engineering (General) Consultants: 79

Isaak Technologies provides expert witness, consulting & training services in the areas of design, construction, procurement, implementation, commissioning and operations of information technology, telecommunications, network systems and critical data center facilities. Isaak Technologies provides clear solutions to complex challenges using best-practice forecasting, strategy & risk mitigation. 

Philip J. Isaak, PE, P.Eng., DCDC, RCDD, SMIEEE, has over 20 years of experience as a design & operations consultant & training provider, with a focus in the information technology, telecommunications & critical data center facility industries. 

In recognition of Mr. Isaak’s professional standing, the Officers & Board of Directors of the Institute of Electrical & Electronic Engineers (IEEE), the world’s largest professional association for advancement of technology, certified his election to the grade of Senior Member, a level only 9% of IEEE’s over 400,000 global members hold. 

Professional Services:

Litigation	IT & Telecommunications	Critical Facilities
IP, Trade Secrets, Contracts Design, Construction, Implementation Claims, Damages, Defects, Delays, Failure & Quality Control Analysis Failed System Analysis Unfulfilled SLAs Technical Investigations Claims Preparation & Analysis Expert Reports Settlement Opinions & Strategies Deposition & Trail Testimony	Needs Assessment, Gap Analysis & Audits Strategic Plans Design, Procurement & Implementation Management Business Continuity & Disaster Recovery Planning Capacity Planning & Forecasting Operations Planning Enterprise Architecture, Network Systems, Services & Cabling Infrastructure Planning Outsourcing Analysis & Planning for Colocation, XaaS or Cloud Services	Design Consultant, Contractor & Commissioning Vendor Qualification & RFP Development Reliability Analysis Design Peer Review Site Assessments & Planning Facility Assessments & Audits Space, Power & Cooling Capacity & Redundancy Planning Commissioning Management Standard Operating, Maintenance & Emergency Response Procedures

View Philip Isaak's Expert Witness Profile.

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. 

Vehicles Car/Truck Accident Reconstruction Crash Data Retrieval (CDR) Visibility & Reaction Time Analysis Tires, Trailers, Brakes & Accelerators Truck/Off Road Vehicle Egress/Ingress Traffic Signing and Construction Zones Electronic Vehicles Mechanical & Electrical Safety Product Safety & Analysis Machinery - Metal, Wood, Plastic Molding Machine Guarding & Safety, Robots, Automation Hazard and Risk Analysis Employee Safety Procedures – OSHA Electrical Distribution & Transmission Hazards

Warnings & Instructions Warning Labels & User Manual Design Hazard Analysis & Product Label Designs Medical Device & Drug Warnings & Instructions Inadequate Warnings Analysis Standard Compliance (ANSI Z535) Product Recall Information & Strategies Consumers/Household Safety Appliances & Tools Child Furniture, Choking, Playgrounds Swimming Pools & Exercise Equipment Recreation - ATV, Boats, Bicycles, Boards Ladder, Stair, Step and Railing Accidents Slip, Trip, & Fall Accidents CPSC Recall Information & Strategies

Chemicals Safety & Labeling NEW OSHA HAZCOM (2012) & GHS Review MSDS, SDS and Product Label Compliance Toxic Torts - Diacetyl, Asbestos, Benzene, Lead, Carbon Monoxide Vaping & E-Cigarette Health Effects Chemical Exposures & Workplace Safety Chemical Inhalation, Ingestion, Dermal Contact Contamination - Water & Environmental Manufacturing & Process Line Accidents Slips, Trips, Falls, & Entanglements Fires & Explosions Cause & Origin Investigations Gas, Vapor, & Electrical Spontaneous Combustion Vaping & E-cigarette Battery Failures Fire Control & Explosion Issues

Agriculture Tractor & Equipment Accidents Chemical Applications & Exposures Crop Storage & Harvesting Accidents Pesticides Construction Vehicle Visibility Accidents Slip, Trip, & Fall Accidents Power Tool Repetitive & Immediate Injuries Scaffolding - Cranes - Hoisting - Fork Lifts Insurance Subrogation & Forensics Accident Investigations Electrical & Fire Causation Chemical Leakage Damage Defective Equipment Injuries Premise and Process Damages

James M. Miller, PE, PhD – Founder  Dr. Miller is an Emeritus Engineering Professor at the University of Michigan. He has directly served in Washington originating several Federal OSHA safety regulations, and interacts regularly with CPSC regarding safety and product recalls. Dr. Miller often works on projects relating to compliance with occupational safety standards, provides upper management guidance on product design, recall and liability issues, and serves as an expert witness.

Mark R. Lehto, PhD – Co-Founder Dr. Lehto is a Professor of Engineering at Purdue University. He completed his Ph.D. in engineering at the University of Michigan, where he specialized in Human Factors Engineering, in particular Warnings and Labeling. Dr. Lehto specializes in knowledge engineering, warnings and instructions, structuring expert systems, accident modeling, accident statistical analysis, consumer product safety, boating safety, in-field national surveys of product usage, and product information effectiveness.

David R. Clark, PE, PhD – Co-Founder Dr. Clark is an Emeritus Engineering Professor at Kettering University. He was an engineering PhD graduate from the University of Michigan, where he specialized in human factors engineering and system safety analyses. He has a special expertise in electrical fire- and explosion-related accidents, and has extensive experience working for loss control companies, performing over 150 fire origin and cause investigations in the past few years.

Adam M. Olshove, PE, MSE – Engineering Manager Mr. Olshove has over 10 years of experience providing consulting services to industry and the legal profession. He holds an MS in Mechanical Engineering with a focus on control systems and battery modeling (2019), and a BS in Mechanical Engineering (2012), both from the University of Michigan. He has performed dozens of on-site investigations nationwide in relation to consumer product design and industrial accidents, including failure analysis and testing.

Jeffrey D. Rupp, MSE – Engineering Associate Mr. Rupp has a BS in mechanical engineering from the University of Michigan and a MS in systems engineering and engineering management from Wayne State University. Among his company affiliates is 26 years with Ford Motor Company and Volvo Car Corporation, where he was involved in crash development and crash sensing calibrations.

Rouzbeh R. Taghizadeh, PhD, has been researching, developing, and bringing to market Cellular and Tissue based Products and Medical Devices for clinical use – as a researcher, scientist, entrepreneur, innovator, and key opinion leader. Dr Taghizadeh is a Scientist, Entrepreneur, Innovator and Subject Matter Expert offering Business Consultant services in the following areas:

Regenerative Medicine Blood and Tissue Banks Blood and Tissue Manufacturing Cellular and Tissue Based Therapeutics Umbilical Cord Blood / Bone Marrow

Stem Cell Bioengineering Longevity Cellular & Tissue Engineering Biotechnology Medical Devices

Dr. Taghizadeh's research has focused on developing aand patenting a new method to increase the number of hematopoietic (blood forming) stem cells (master cells that produce working cells for the lifespan of an organism) ex vivo (outside the body) for treatment of patients afflicted with blood disorders and cancers. He has investigated various sources containing blood-forming stem cells, including umbilical cord blood, bone marrow, and mobilized peripheral blood.

Dr. Taghizadeh also co-founded a biotechnology company that pioneered the processing and banking of umbilical cord tissue for clinical use. He's worked with various groups including umbilical cord blood & tissue banks, organ procurement organizations (OPO), academic, biotechnology, pharmaceutical, contract manufacturing and medical device groups. Due to the diverse nature of the groups that he has worked with, he has experience in developing, manufacturing and innovating cellular therapeutics, regenerative medicine, allografts (tissue products developed from different donors & recipients), bioengineering, cellular and  tissue engineering products.

View Dr. Rouzbeh R. Taghizadeh's Expert Witness Profile.

Established in 2000, Laird are an Expert Witness services firm supporting the Legal sector across the UK. They understand the importance of providing an efficient and seamless customer journey and review their processes continually to ensure that they achieve and surpass expectation levels daily.

With constantly evolving IT systems and exceptional customer service, Laird are leading the way in the Expert Witness sector. You can instruct with the click of a button via their website and will be kept up to date at every stage of your case.

Laird have three main areas of expertise:

Automotive Experts

Vehicle Damage Reports Low Velocity Impact Diminution in Value Desktop Reports

Vehicle Valuation Disputes Accident Reconstruction Pre and Post Repair Inspections Vehicle Data Check

Photography Experts

• Locus Reports
• Personal Injury Photography Reports

Language Experts

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

Rudolph P. Frizzi, PE, GE, D.GE is a Civil Engineer with over 25 years of extensive practical Foundation and Geotechnical Engineering experience. His geotechnical Engineering and project management experience is extensive with particular emphasis on: foundation design and construction in urban areas and large scale land and waterfront public and private development projects throughout the United States and internationally. Mr. Frizzi has interacted on projects located in practically every continent world-wide.

Consulting Services Include:

• Sub-surface Investigations
• Foundation Design
• Seismic Analysis and Numerical Modeling
• Earth Retaining Structures, Excavation Support, Underpinning Design
• Ground Improvement and Soil / Rock Slope Stabilization
• Tunneling, Underground, and Trenchless Construction
• Waterfront Design and Marine Engineering
• Temporary and Permanent Groundwater Control
• Controlled Inspection and Instrumentation Monitoring During Construction

Mr. Frizzi has obtained extensive field, office supervision, project management, and forensic experience including soil and rock sampling and in-situ testing; monitoring pre, during, and post construction with state of the art geotechnical instrumentation; nondestructive testing; aqueous and sub-aqueous inspections and investigations and heavy construction field inspection which has contributed to his practical approach to geotechnical problem solving. Selected Projects:

• One57 - 1,005 feet tall, 5-star, 210 room Park Hyatt Hotel and 95 premium condominiums and residences. Performed geotechnical and environmental engineering investigations, and provided foundation recommendations to support the proposed tower on spread footings supported on rock
• Farmer's Field Event Center - geotechnical and environmental engineer for this highly anticipated 1,700,000-square-foot state-of-the-art sports stadium, entertainment venue, and premier convention center that will bring the NFL back to Los Angeles

View Rudolph Frizzi's Expert Witness Profile.

Philip T. Tringale, PhD, PE is a registered Professional Civil Engineer with over 25 years of Environmental Consulting experience. Dr. Tringale has served in senior technical and management positions throughout his thirty year professional career. With experience gained from a start-up consulting firm as well as from well-established engineering companies, he continues to focus his energies on leading technical projects and overseeing technical and geographic expansion activities.

Consulting Services Include:

• Site Assessment and Remediation Program Direction
• Mergers & Acquisitions Assistance
• Public Participation Programs
• Regulatory Agency Interaction
• Litigation Support for Litigation involving Source Identification, Nature and Extent of Contamination, Cost Allocation, and Compliance with the National Contingency Plan

As a registered professional engineer, Dr. Tringale has directed numerous site assessments and remediation programs involving soil and groundwater contaminated primarily by organic solvents, metals, and petroleum products. He has particular expertise in site characterization and in the use of in-situ testing to evaluate soil properties. Dr. Tringale has provided final design for remedial actions that involve excavation, containment, bioremediation, vacuum extraction, monitoring, and groundwater treatment.

Selected Projects:

• Historic Schlage Lock manufacturing complex in San Francisco which was rezoned mixed-use commercial and residential. Services included excavation of sumps and contaminated soils, and the design and installation of a soil vapor extraction system to remove volatile organic compounds
• Contra Costa Waste Service Landfill - provided monitoring, remedial planning, and design of landfill closure services for this Superfund Landfill site

View Dr. Tringale's Expert Witness Profile.

Tim Keane is recognized nationally and internationally as a Leading Expert on methods to Control, Mitigate and Assess the Risk for Legionella in building and industrial water systems. He has published articles and books on the subject and has co-written regulatory documents including the 2018 and the 2015 ASHRAE Standard titled: Legionellosis: Risk Management for Building Water Systems,  ASHRAE Guideline 12 titled: Managing the Risk of Legionellosis Associated with Building Water Systems, 2005 Guidelines for Ornamental Fountains and the 2000 ASHE Advisory. Mr Keane has over 25 years experience in water system consulting and over 10 years experience in facility design, construction and operation. Legionella Risk Management, Inc. provides consulting services for Effective Engineering Solutions to Engineering System Pathogens including; outbreak investigation, root cause analysis, control and remediation of legionella from water systems in commercial buildings, healthcare and industrial facilities.   We provide Litigation Support in this area.

Florida Office:
Andrew Avalon, PE, PSP
Chairman & CEO
8633 Willow Kane Court
Orlando, FL 32835
aavalon@long-intl.com
T: (407) 445-0825     F: (407) 650-3399

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Long International provides expert engineering and construction claims analysis, expert testimony, project management consulting, and insurance claims analysis services. We focus on projects in the following industries: building and construction; gas, gasification, GTL, LNG, and NGL; industrial and manufacturing; mineral and mineral processing; offshore oil and gas; oil sands; pipelines and utilities; power; refineries, petrochemical, and chemical; transportation; and water, wastewater, dams, and marine.  We analyze claims, not limited to, disputed change orders, schedule delay, acceleration, time extensions, liquidated damages, loss of productivity, defective specifications, and deficient project management performance.

Richard J. Long, P.E., P.Eng., Founder of Long International, has over 50 years of U.S. and international consulting experience involving construction contract disputes analysis and resolution, arbitration/litigation support and expert testimony, project management, engineering/construction management, cost and schedule control, and process engineering. As an internationally recognized expert in the analysis and resolution of complex construction disputes for over 35 years, Mr. Long has served as the lead expert on over 300 projects having claims ranging in size from US$100,000 to over US$2 billion. He has presented and published numerous articles on claims analysis, entitlement issues, CPM schedule and damages analyses, cumulative impact claims, and claims prevention.

Rod C. Carter, CCP, PSP is President of Long International and has over 20 years of experience in construction project controls, contract disputes and resolution, negotiations, mediation, arbitration support, and expert testimony on scheduling, loss of productivity, and quantum issues.  He has experience in entitlement, schedule, and damages analyses on over 30 construction disputes ranging in value from US$100,000 to US$7 billion, related to oil and gas, oil refinery, LNG, heavy civil, nuclear, environmental, chemical, power, industrial, commercial, and residential construction projects.  Mr. Carter is proficient in the use of Primavera P6 and P3 software, and he has extensive experience in assessing the impact to engineering and construction works of RFIs, change orders and other events.  Mr. Carter specializes in loss of productivity, cumulative impact, and quantum calculations, and had a lead role in assessing damages on more than a dozen major disputes.  In addition, Mr. Carter has developed cost and schedule risk analysis models using Monte Carlo simulations to address the uncertainty of estimates and claims.

Scott M. Francis, P.E., PSP is a Vice President of Long International and has over 20 years of experience in project management, contract disputes analysis and resolution, CPM schedule preparation, execution, and analysis, productivity analysis, contract administration, design engineering, construction management, and government contracting.  He provides schedule development and assurance services, cost estimating, and claims analysis services on projects for both owners and contractors.  Specific responsibilities include CPM development and reviews, CPM schedule delay and acceleration analyses, change order impact analysis, issue identification, correlation of impacts to schedule activities, and productivity evaluations.

Peter Howell, PE, CSP, CFEI, FAIChE, has almost 50 years of experience in the Design, Operation, Maintenance and Management of Chemical and Petrochemical Facilities with positions such as process engineer, project engineer, maintenance foreman, technical manager, engineering manager, plant manager and vice president and general manager.

Mr. Howell has investigated approximately 125 incidents that occurred in chemical plants, refineries, pulp and paper mills and similar industries for attorneys, insurance companies and regulatory agencies. He has determined the root causes using methodologies consistent with NFPA 921, Center for Chemical Process Safety, United Steel Workers, and the National Safety Council.  The root causes determined were based on the evidence, Recognized and Generally Accepted Good Engineering Practices and federal regulations.

Mr. Howell has extensive experience in developing, implementing and auditing the elements of OSHA's process safety management (PSM) regulation and EPA's risk management plan (RMP). He also has extensive experience in accident and incident investigations involving fire, explosion, and release of toxic and hazardous materials.  He frequently serves as an expert witness and provides litigation support.

Areas of Expertise:

OSHA Compliance Safety Performance Improvement Incident Investigation Recognized and Generally Accepted Good Engineering Practices (RAGAGEP) OSHA PSM Regulation

EPA RMP Regulation Process Hazards Analysis Design, Operation Maintenance and Management of Chemical and Refinery Equipment and Facilities

Matt Hartley Lighting, LLC combines the Science of Engineering Design to the Art of Illumination. They provide a wide variety of services to the lighting design community, some of which include:

• Lighting Design and Simulation - Produced over 12000 different designs for interior, exterior, roadways, daylighting, and sports lighting facilities
• Manufacturing - Includes both technical marketing services and optical design; creation and management of specification sheets, IES file review and management, fixture testing coordination, certification management of fixtures, BIM modeling, AGI32 instabase management, and competitive analysis of fixtures
• Teaching and Presenting - Provide training for large or small groups in areas including general lighting, photometry, applications, and advanced topics. Past training experience with Lithonia, Lighting Analysts, and Peerless

Principal, Matthew J. Hartley, is a noted expert in Lighting, Lighting Design, Product Development, AGI32, and Photometry He has been in the Lighting Industry for over 24 years. In that time, he has held positions in design, product management, customer service, and design engineering. Mr. Hartley has been employed by manufacturers, lighting software companies, and lighting agencies. He has immersed himself in different facets of the industry including indoor and outdoor lighting, safety and security, lighting and human health, and lighting standards. 

Mr. Hartley has been involved with several standard writing committees within the Illuminating Engineering Society of North America, producing over six standard documents. Since 1999, he has taught Lighting and Lighting Design to diverse groups, from students to seasoned lighting professionals, and presented at conferences and seminars on a variety of topics, such as of photometry, design, or IES Documents.

View Matthew Hartley's Expert Witness Profile.

Dr. Kanellakopoulos is a Technology leader with 25+ years of experience in R&D, operations, administration, and management, in both academia and industry. He has authored or co-authored books, numerous articles in peer-reviewed technical journals and refereed technical conferences, and multiple standards contributions. He is also the co-inventor on more than 25 patents. He has been the plenary speaker at major technical conferences, and an invited speaker at more than 40 industrial and academic venues in 12 countries across 4 continents.

In his industrial career, he Designed and Built Telecom Products such as DSL and Carrier Ethernet hardware and software, and has significant experience with international telecommunication standards (ITU-T). He has also worked in wireless communications (3GPP, Wi-Fi), primarily on digital signal processing methods for baseband transceivers.

In his academic career, Dr. Kanellakopoulos conducted research on adaptive control of nonlinear systems, with applications to automotive control systems, specifically ADAS (adaptive cruise control, blind spot monitoring, lane keeping, vehicle collision avoidance) and active suspension. He directed a project on automation of heavy-duty vehicles as part of the California PATH Program; one of the most visible results of this research was the “Variable Time-Headway” algorithm for adaptive cruise control, which was demonstrated on a fully-automated heavy-duty (Class 8) 18-wheeler truck and has found widespread use in current adaptive cruise control systems. His UCLA team also designed and built a prototype full-size fully-automated electric vehicle that has been used for research purposes on multiple college campuses.

Dr. Kanellakopoulos has directed collaborative projects with several automotive/truck manufacturers and vendors (Ford, Mercedes-Benz, DaimlerChrysler, Freightliner, Gentex, Visteon).

He has consulted for clients such as technology companies (on intellectual property strategy and product development), private equity firms (on due diligence for investment), and law firms (on expert witness matters).

He is an IEEE Fellow and a recipient of multiple national and international awards.

View Dr. Kanellakopoulos's Expert Witness Profile.

OrthoBioMech LLC provides Medical Device Development and Injury Biomechanics Analysis services to the orthopedic and legal fields. The founder, Mari S. Truman, PE, has more than 37 years of experience in Orthopedic Product Design and Development. As Principal Engineer, she acts as an R&D design and development consultant to the orthopaedic industry and an injury biomechanics and medical device forensic expert.

While working for and with the major US Orthopaedic companies, she designed numerous instruments and implants for repair of skeletal injury. 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.

Ms. Truman founded and ran ArthroMotion (1993-1997) and Seabrook International LLC's Midwest Design Center (1999-2002). Her project experience (non-inclusive):

• Total and Hemi Joint Resurfacing Systems: Hip, Knee, Wrist, Ankle, Hand/Toe, CMC, PIP, DIP, Shoulder
  
• Trauma Systems: Plates, specialty screws, intramedullary nails, wires, cables, external fixation systems, spinal fusion systems
  
• Soft Tissue Reattachment Systems

Speaking Venues: ASME Congress, North American Spine Society, Southern Biomedical Engineering Conference, International Society of Biomechanics, National Manufacturing Week Conference, American Society for Surgery of the Hand, International Hand and Wrist Biomechanics Symposium, International Federation of the of the Societies for Surgery of the Hand, Vth International Symposium on Computer Simulation in Biomechanics, Indiana Medical Device Manufacturer’s Council, Ohio Bar Association and the Ohio Trial Lawyer’s Association.

View Mari S. Truman's Expert Witness Profile.

Pond Industries LLC offers a wide variety of Metallurgical and Materials Testing services with specialized consulting solutions. Having obtained Professional Engineering certificates in 48 states, Pond Industries offers testing and consulting services to multiple industries with a wide portfolio of high-demand services, including:

Forensic Metallurgy / Failure Analysis - Determining the root cause of a mechanical failure is critical for preventing future failures or determining fault. Metallurgical failures in parts or assemblies are fatigue, overload, corrosion, improper design, or some combination of these failure modes. 

Engineering Consulting - Common engineering services provided are stress analysis, finite element analysis (FEA), material selection, mechanical design, CAD modelling, and engineering document review. Materials Testing - ISO 17025 accredited test laboratories to ensure clients get the best quality test results, and material experts that can help interpret and understand the test data and offer guidance when needed. 

Weld Inspections - AWS Certified Welding Inspector (CWI) services to assist with any stage of the welding process or operations. From procedure and welder qualifications to pre- and post-weld inspections, clients have the comfort of knowing that your welding inspector is an expert in weld metallurgy and testing. 

Derailment Investigations - Extensive knowledge of rail related forensic metallurgy, having contributed to hundreds of derailment investigations and derailment emergency response teams. A typical derailment investigation includes site inspection, metallurgical evaluation, dynamic simulations, root cause.

Brett Pond,  PhD, PE, CWI, has over 16 years of experience as a Mechanical Engineering and Metallurgical consultant specializing in Forensic Metallurgy (failure analysis).  He has a strong background in the rail industry, having participated in hundreds of derailment investigations and rail related failure analyses. 

Dr. Pond obtained his PhD in Mechanical Engineering from Washington University in St. Louis, has Professional Engineering (PE) licensure in 48 states, and is an AWS Certified Welding Inspector (CWI).  He is an active member of ASM International, American Society of Mechanical Engineers (ASME), National Society of Professional Engineers (NSPE), and American Welding Society (AWS), and the National Academy of Forensic Engineers (NAFE)

.Dr. Pond has earned international recognition for his failure analysis capabilities and has given technical presentations at multiple Failure Analysis Forums hosted in Shanghai, China. He has a wide range of experience, including: API Fitness for Service (FFS) Evaluations, field testing, mechanical / metallurgical laboratory management, legal expert witness services, and failure analysis for Rail, Food, Manufacturing, Oil and Gas, Medical, and Transportation industries.

View Dr. Brett Pond's Expert Witness Profile.

As an arbitrator, structural/civil engineer, and expert forensic consultant with nearly four decades of experience, Casey Hemmatyar has provided extensive expert services for defendants’ and plaintiffs’ attorneys on numerous construction litigation matters throughout the United States and Canada.

He has been retained as an expert engineer in over one hundred litigation matters on single and class-action legal cases by the U.S. government, law firms, and insurance carriers at the State and Federal levels, working with both plaintiff and defendant sides.

A partial list of litigation cases is available upon request. His understanding of core engineering and legal concepts has enabled him to assist a wide range of clientele effectively. He brings diversified experience in structural and civil engineering design and forensic engineering, investigation, and evaluation.

He also conducts research, has assisted in the development of building codes and standards, and has supervised the construction of domestic and international projects. His experience includes special structures and new buildings as well as modifications, alterations, seismic/hurricane retrofits, and upgrades to existing structures. He has provided failure analysis, expert consultation, structural forensic investigation, and damage assessment services for numerous litigation and insurance-related matters.

He actively presents continuing education lectures to audiences of licensed engineers, architects, and general contractors on topics of structural and forensic engineering throughout North America. Mr. Hemmatyar has been the principal structural engineer on high-profile projects for prestigious clients, including NASA and other notable organizations.  Currently, he directs PSFEG and has served as Director for SEAOSC from 2011 to 2013.

His work encompasses a diverse range of structures, including hospitals,  educational institutions (including schools and universities), telecommunication centers, aviation facilities, government buildings, laboratories, as well as commercial, industrial, and residential structures.

Dr. J.P. Purswell, PhD, PE, CPE has extensive experience in Human Factors, Ergonomics and Safety Engineering. He has completed projects for clients in all these areas and regularly teaches ergonomics and safety engineering at Colorado State University. 

Dr. Purswell Consults with Manufacturers on Product Safety Issues, including Warnings and Instructions. He also Consults with Employers regarding the development and implementation of safe and ergonomically sound work practices, including the identification and control of ergonomic risk factors for back injuries and upper extremity cumulative trauma disorders. 

Dr. Purswell has prepared ANSI Z535 compliant instructions and warnings for attic ventilators, deer-stands, LPG hoses, ammonia hoses, warehouse rack systems, and arts and craft products among others. He has also prepared ANSI Z129.1 compliant warnings for a range of chemical products from gasoline pump warnings to brake pads and ammonia hoses, and OSHA and ANSI Z400.1 compliant material safety data sheets for several chemical manufacturers. 

He is the author of more than 20 publications or presentations on product safety, occupational safety, printed warnings, and auditory warnings. He has been inducted into Alpha Pi Mu, the Industrial Engineering Honor Society and is a recipient of the Gordon Fellowship from the University of Oklahoma. 

Consulting Services:

• Design and Testing of Instruction Manuals and on Product Warnings
• Usability Testing of Products for Ease-of-Use and Safety
• OSHA Audits for Employers
• Employer Training - Benchmarking Safety Performance Against a Company's Industry
• Employer Training - How to Prepare For OSHA Inspections

View Dr. Purswell's Expert Witness Profile.