Business consultants
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Mines / Mining (General) Consultants: 5
Current Category:
Forensic Geology Sinkhole Consultant David Wilshaw
David Wilshaw, MS, PG
President
P.O. Box 783547
Winter Garden FL
34778
USA
phone: 407-342-7737
David Wilshaw, MS, PG has over 35 years of international experience in Engineering Geology, Geotechnics, Engineering Geophysics, Hydrogeology and Geo-Environmental Assessments. He is licensed as a Professional Geologist in California, Florida, Pennsylvania and Tennessee. Mr. Wilshaw is also a Chartered Geologist and Fellow of the Geological Society of London in the United Kingdom.
Over a long career, Mr. Wilshaw has provided geological, geotechnical & geo-environmental expertise for residential, commercial & retail development, public buildings and infrastructure, open pit and underground mining reclamation, power plants, roads, railroads and ports. He has extensive experience in pre-construction geohazard and contaminated land assessment. He has been the statutory Professional Geologist pursuant to s.627.707 Florida Statutes for more than 850 sinkhole insurance claims and he is a certified Neutral Evaluator (under s.627.7074 Florida Statutes).
Mr. Wilshaw has extensive peer review & litigation experience, having provided expert witness testimony at over 160 depositions and over 40 trials. Mr. Wilshaw is also owner and President of Integrity Drilling & Geophysical Services, LLC, www.idgsfl.com, providing geotechnical drilling, soil testing and geophysical surveying throughout Florida. IGDS owns four (4) SPT drilling rigs, GPR equipment and a soil testing laboratory. In 2019, he relocated Ground Stiffness Surveys Ltd from the UK and is President of successor company Ground Stiffness Surveys LLC, www.groundstiffnesssurveys.com
Consulting Services Include:
- Intrusive and Non-Intrusive Subsurface Exploration techniques
- Ground Subsidence
- Evaluation of Disputed Sinkhole Insurance Claims (defense & plaintiff)
- Development of Ground Stabilization and Improvement Schemes
- Landslip and Landslide Analysis
- Karst Geology Risk Assessments
- Pre-Litigation Consulting
Engineering Consultant James Miller
James M. Miller, PE, PhD
Founder
2392 Fuller Court
Ann Arbor MI
48105
USA
phone: 734-662-6822
fax: 734-747-9712

The experts at Miller Engineering are Ann Arbor-based professional engineers celebrating 30 years of service to University, Government, Insurance, and Industry through research, publications, presentations, and testimony. Miller Engineering has a staff of engineers and experts in the Mechanical, Chemical, Agriculture, Industrial, and Human Factors fields of engineering with specific knowledge in the following areas:
Vehicles
Mechanical & Electrical Safety
| Warnings & Instructions
Consumers/Household Safety
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Chemicals Safety & Labeling
Chemical Exposures & Workplace Safety
Fires & Explosions
| Agriculture
Construction
Insurance Subrogation & Forensics
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![]() Dr. Miller specializes in warnings, labeling and instruction manuals, consumer product design, machine guarding, process safety, fire science, vehicle visibility, tractor egress/ingress, pedestrian and worker slip and fall prevention, recreational vehicles (ATVs, boats, and personal watercraft), compliance with occupational safety and consumer safety standards (OSHA, MSDS, CPSC, ANSI, ASTM, UL, etc.). |
![]() 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 Ph.D. graduate from the University of Michigan, where he specialized in human factors engineering and system safety analyses. In particular, his earlier degrees in mechanical and electrical areas have given him a special expertise in electrical fire- and explosion-related accidents. Dr. Clark is also published on the topics of warnings and labeling. With considerable in-plant experience at General Motors, he is uniquely qualified to provide student theses and design projects while teaching at Kettering that deal with many types of mechanical and optimization projects. Finally, he has extensive experience working for loss control companies, performing over 150 fire origin and cause investigations in the past few years. |
Process Plant Construction Consultants Long International
Richard J. Long, P.E., P.Eng.
Founder
Corporate Headquarters:
5265 Skytrail Drive
Littleton CO
80123-1566
USA
phone: (303) 972-2443
fax: (303) 200-7180

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) 445-0821
Long International provides expert engineering and construction claims analysis, expert testimony, project management consulting, and insurance claims analysis services. Our focus is on heavy industrial projects including oil and gas, petroleum refining, petrochemical, chemical, mining/mineral processing, power, cogeneration, and other industrial projects. 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.
Michael J. Vallez, P.E., MBA, LEAN SIX SIGMA is a Senior Principal with Long International and has over 40 years of hands-on and leadership experience in project management, engineering/construction management, cost and schedule control, change management, claims, and dispute resolution. He has served in executive management roles for both the owner and contractor working on world-class oil and gas, power, and international mining projects. Mr. Vallez has a proven ability to organize, integrate and manage the work of multi-disciplined technical specialists and project construction teams to achieve corporate financial goals and objectives of return on investment, safety, operational performance, cost, and time. In all, he has provided leadership on several billion dollars’ worth of projects in the chemical, heavy civil, mining, power, oil and gas, industrial, and commercial sectors. Mr. Vallez has written several books on the subjects of construction management, safety, and effective project leadership.
Real Estate Title Consultant Timothy Truwe
Tim Truwe
President
250 Hallock Drive, Suite 100
Santa Paula California
93060-9218
USA
phone: (805) 933-1389

Incorporated in 1986, Petru serves the needs of the title, title insurance, oil, gas, mineral, geothermal, wind, solar, mining, environmental, and right-of-way industries; legal, engineering, subdivision, developers, and land planning professions; government; lending and trust institutions; water purveyors; utilities; real estate companies; and the individual and business communities.
Petru Corporation and Tim Truwe were featured on Enterprises TV, aired on Fox Business Network and were published in Black Gold in California, the story of the California Petroleum Industry and also in The Business Elite, Corporate America.
Consulting Services:
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Background - Mr. Truwe started his career in 1973 in the title, resource, and regulatory industries. His career includes employment and training at Ticor Title Insurance Company (now Chicago Title Co.) as Title Searcher, Title Officer, and Title Engineer. He also worked at Ogle Petroleum Inc., as Assistant Land Manager in the Land/Legal Department. His responsibilities at Ogle included both onshore and offshore assets and the technical and administrative oversight of several thousand parcels of land and leases in excess of one million acres.
OSHA Safety Construction Consultant Greg Gerganoff
Greg Gerganoff, CSP, Esq.
Certified Safety Professional
Denver, CO
All States USA
phone: 303-330-4616

Rocky Mountain Safety Consulting, Inc. (RMSC), formulates effective and workable Safety Solutions tailored to unique business operations. A well-functioning, self-sustaining safety program avoiding incidents eliminates project slowdown, costly damage to equipment, tough questions from clients, and, most importantly, injury to employees. RMSC provides services to the construction, manufacturing, mining, and oil and gas industries.
RMSC Consulting Services:
- Safety Programs - Draft and implement safety programs followed by training of crews and management. JSA's and JHA's, weekly safety talks focused on work tasks
- EHS Programs - Develop and implement safety audit programs complying with OSHA and MSHA standards
- Field Auditing - Create and implement field safety audit systems, tracking deficiencies, and correction timelines and accountability. Jobs Safety Analysis implementation
Principal, Greg Gerganoff, ASP, CSP, Esq., is an OSHA / MSHA Safety field and compliance expert in the fields of heavy construction, oil and gas, mining, pipeline, power plant outages, light rail construction, public schools, manufacturing, and trenching and excavation.
As OSHA and MSHA are not mere “guidelines to safety” but federal laws enforceable in administrate hearings and federal courts, Mr. Gerganoff's 12 years of experience as a Licensed Attorney, and additional 17 years as a safety professional, make him uniquely qualified to research and interpret OSHA regulatory laws (29 CFR 1910 & 1926) and MSHA (30 CFR Part 46). He maintains his license to practice law in the state of Colorado.
Safety Training includes but not limited to:
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