As a former basic
                                    and applied scientific researcher, laboratory director, laboratory safety officer, laboratory radiation officer, teacher,
                                    chemist, certified industrial hygienist, hazardous exposure risk assessor, biophysicist and consultant, Dr. Guth brings over
                                    50 years of extensive and in-depth experience in numerous scientific disciplines and specialized professions to bear in his
                                    independent consultations, assessments and case reviews. He has been a named expert in many hundreds of legal cases across
                                    the U. S.
                                    and has been Daubert-qualified and testified in well over 100 trials.  He has
                                    also been an invited, paid peer reviewer and consultant to the U.S. E.P.A., O.S.H.A., and other governmental bodies.  
                                     
                                    His legal expert and
                                    consultation work has included many cases and projects in the following subject areas:
                                     
                                    *Chemistry (General,
                                    Analytical, Instrumentation, Standard Methods, Inorganic, Organic, Polymer, Physical Chemistry, Biochemistry, Clinical Chemistry,
                                    Forensic Chemistry and Criminalistics, Pharmaceutical Chemistry and Illicit Drug Testing, Petroleum Chemistry, Environmental
                                    Chemistry, Soil & Agricultural Testing, Hazardous Waste Testing, Water & Wastewater Chemistry, Atmospheric Chemistry
                                    and Compressed Gas Purity, Industrial Hygiene Analytical Methods, Asbestos Analysis, Radioisotope Chemistry, Industrial Chemistry,
                                    Natural Products Chemistry, Food Chemistry, Lead Paint Testing, Paint Chemical Testing, Standards Certification Testing, and
                                    Analysis of Unknown Substances)
                                     
                                    *Laboratory Design,
                                    Good Laboratory Practices, Staff and Data Management, Safety and Testing Methodology Issues
                                     
                                    *Laboratory Methodologies
                                    and Quality Assurance of Results
                                     
                                    *Development and Validation
                                    of New Laboratory and Field Test Methods
                                     
                                    *Microscopy (Optical
                                    and Electron Microscopy)
                                     
                                    *Asbestos Product Characteristics
                                    and Exposure Potential
                                     
                                    *Asbestos Product Retrospective
                                    Exposure Assessments
                                     
                                    *Lead Paint Retrospective
                                    Exposure Assessments (Children, Workplace)
                                     
                                    *Carbon Monoxide and
                                    Hydrogen Sulfide Poisoning Determinations
                                     
                                    *Asphyxia Determinations
                                     
                                    *Solvent Exposures and
                                    Disease Causation (Petroleum Products, Benzene, Aromatics, Halogenated Solvents, Ketones, Glycols, Etc.)
                                     
                                    *Acid and Alkali Injuries
                                     
                                    *Tobacco Exposure and
                                    Usage Risks
                                     
                                    *Silica/Quartz Exposure
                                    Assessments
                                     
                                    *Formaldehyde Exposures
                                     
                                    *Mold Exposure and Indoor
                                    Air Quality Assessments
                                     
                                    *Numerous Other Toxic
                                    Chemical Exposures
                                     
                                    *General Comprehensive
                                    Industrial Hygiene and Safety Assessments
                                     
                                    *Health & Safety
                                    Program Evaluations, OSHA and EPA Compliance Evaluations 
                                     
                                    *Slip/Trip/Fall Investigations
                                     
                                    *Wrongful Death Determinations
                                     
                                    *Chemical, Fire, Smoke,
                                    Explosion and Confined Space Injuries and Deaths
                                     
                                    *Material Science Defect
                                    or Quality Issues (Chemical Composition, Surface Finishes and Treatments, Design or Manufacturing Defects, Physical Properties,
                                    Wear or Durability Issues) 
                                     
                                    *Product Failure and
                                    Product Liability Determinations
                                     
                                    *Container Explosions
                                    and Accident Reconstruction
                                     
                                    *Medical Device Failure
                                    Analysis
                                     
                                    *Metallurgical, Plating,
                                    Corrosion and Surface Treatment Failures
                                     
                                    *Construction Material
                                    Failure Determinations
                                     
                                    *MSDS Preparation and
                                    Evaluations, Labeling, Warnings and Packaging Issues
                                     
                                    *Toxicology and Cancer
                                    Causation Assessments
                                     
                                    *Radiation Exposures
                                     
                                    *Pathogen and Biological
                                    Agent Tracing
                                     
                                    *Arson/Fire/Explosion
                                    Causation/Flammability and Flame Retardant Issues
                                     
                                    *General Forensic Laboratory
                                    Methods and Result Evaluations
                                     
                                    *Illicit Drug and Blood
                                    Alcohol Test Result Evaluations, Pharmaceutical Drug Side Effects, and Drug-Related Death Determinations
                                     
                                    *Compressed Gas Purification
                                    and Purity
                                     
                                    *Food Processing, Safety,
                                    Purity, Content and Packaging Issues
                                     
                                    *Industrial Plant Chemical
                                    Management Failures; Explosions and Fire Cause Determinations
                                     
                                    *Air, Soil and Water
                                    Pollution Source Tracing and Evaluations
                                     
                                    *Hazardous Material
                                    Testing and Remediation Project Design and Management
                                     
                                    *Environmental and Product-Based
                                    Microbiology 
                                     
                                    *Product Specification
                                    Testing and Quality Assurance