Marvin R. Blethen, PE, MBA, MS, founder of Blethen Mining Associates, PC, is an Engineer and Mining Consultant who has worked as an industry insider on the front lines and in executive and advisory positions for over 28 years. He earned his MBA from Troy State University and graduated cum laude with a BS in Mining Engineering from West Virginia University Institute of Technology. He is a licensed member of the National Society of Professional Engineers and a Founding Registered Member of the Society for Mining, Metallurgy, and Exploration.

Mr. Blethen has real life experience as an Engineer in Sand, Aggregates, Coal, Fire Clay, Kaolin, Novaculite, Quartz, Precious Metals, Magnesite, Bauxite, Graphite and Industrial Minerals Mining and brings a high level of technical experience to a business he understands. His focus is delivering state of the art technical engineering support to all phases of operation, from exploration to site reclamation, surface and underground mining, domestic and international. As a mining consultant, Mr. Blethen provides technical support and stands as a professional liaison between you and federal, state and/or local governments and regulatory agencies.

Experience Includes:

• Estimation & Evaluation of Resources & Reserves
• Mine Permitting
• Mineral Appraisals
• Mine Ventilation Design
• Mine Planning & Design
• Evaluation & Design of Ground Control
• Design & Evaluation of Process Flow
• Legal & Safety Concerns
• Coordination of All Engineering Fields
• Expert Witness Testimony
• Reclamation Plans
• MSHA New Miner Training & Refresher Training
• Certified First Aid / CPR Training

Edward "Tim" Hurley is a Safety Consultant and Trainer with many years of experience. He has conducted Accident Investigations, Inspections and Enforcement of Cal / OSHA regulations in the following areas:

In addition to providing Design and Forensic Engineering for Conveyors and Bulk Materials Handling Systems, Loeffler Engineering Group's litigation experience includes: Conveyor Accident Investigation and Reconstruction, Demonstrative Evidence, Expert Testimony, Litigation Support, Consultation, Formal Written Reports (Rule 26), Oral Depositions and Trial Testimony. Our clients are both Plaintiffs and Defendants.

Some of the standards considered are: Belt Conveyor Manufacturers Association – CEMA, Safety Standard for Conveyors ASME B20.1, Safety Standard for Power Transmission ASME B15.1, OSHA, MSHA, & National Electric Code – NEC.

Areas of Expertise: