The experience, integrity and qualifications of a consulting engineering company’s staff is its best asset. WEIR is proud of its personnel who collectively have nearly 600 years of experience working in and serving the mining and energy industries. WEIR personnel have both the engineering expertise and operational experience to provide competent service to our clients. The following personnel are well qualified to undertake your projects and assignments.


Fernand A. Barata - Senior Civil Mining Engineer Manager
Mr. Barata is a mining and civil engineer with over 51 years of engineering and operating experience in the construction, mining and consulting industries. His experience includes the design of highways and bridges, analysis of construction and mining projects, preparation of operating manuals for the construction and mining industries, surface mining equipment selection and utilization and management of major construction and surface mining projects throughout the US, China, Morocco, South America, and South Africa.

M. Justin Besancon - Mining Engineer
Mr. Besancon is a mining engineer with more than seven years of experience in both mining and civil engineering. His experience in the mining industry includes soil analysis and quality control assessments and sampling. Mr. Besancon also has experience in surveying, drafting, synthetic fuel facility evaluation and testing, cost and productivity analysis, and surface mine reclamation design.

Thomas E. Blandford, III - Vice President
Mr. Blandford is a mining engineer with more than 27 years of experience in engineering and operations management. His experience includes engineering management at both surface and underground coal mining operations throughout the US and South Africa, as well as mine planning and design, feasibility studies, due diligence investigations, budgeting and contract mining.

T. Donald Del Bosco - Senior Engineering Manager
Mr. Del Bosco is a mining engineer with more than 39 years of engineering and operations experience in the mining industry. His engineering experience includes extensive mine planning and design relative to area, contour and mountain-top removal mining methods. Mr. Del Bosco has extensive operations experience in the Central Appalachia Coal Basin, Illinois Coal Basin, and Western Canada. He is familiar with the productivity and operating cost of surface mining equipment and surface mining methods including dragline, bucket wheel excavators, truck/shovel and truck/loader.

Amanda B. Duchek - Geologist
Ms. Duchek has over four years of experience in the fields of geology, geophysics and environmental geology. Her expertise includes application of environmental science to geological investigations, field applications of geophysics, and detailed mapping and correlation of subsurface horizons.

Douglas M. Dwosh - Senior Mining Engineer
Mr. Dwosh is a mining engineer with more than 42 years of experience in all major disciplines of mining engineering. He has worked on mining engineering and operational projects in all North American coal fields and in Brazil, China, India, Pakistan and South Africa relating to surface mine design, underground mine operation, financial analysis, strategic planning and coal market studies.

Ken Fishel - Senior Geologist/Associate
Mr. Fishel is a professional geologist with diverse geological expertise, experience and knowledge of many sedimentary basins in the world. His professional career spans over 38 years in the coal industry. His responsibilities include design of exploration programs, evaluation and interpretation of geologic data and conducting coal reserve studies.

Donald D. Haas - Senior Mining Engineer/Associate
Mr. Haas is a mining engineer with over 39 years of experience in surface mining including coal, industrial minerals and precious and base metals. His expertise is in property evaluation, mine planning, mine cost estimates, drilling and blasting techniques, operational analysis, feasibility studies, contract mining and financial analysis.

Dennis W. Hill - Civil Engineer/Associate
Mr. Hill has more than 19 years of experience as a civil engineer relative to large surface mining operations. His expertise includes mine permitting and also includes transportation systems design, construction management, erosion control, sedimentation and detention ponds design, pre and post development analysis of streams and materials handling.

J. William Huber - Vice President
Mr. Huber is a civil engineer with over 37 years of engineering and operations experience in the mining industry in both surface and underground mining operations throughout the US, India, Spain and United Kingdom. He has specific experience in mine design, equipment selection, operational assessments, feasibility studies, valuation of coal properties, mineral processing, safety and supervisory training. He has held senior level positions for several major US coal mining companies.

Paul Jesko - Senior Construction Manager/Associate
Mr. Jesko has more than 43 years of engineering and construction management experience in the coal and industrial minerals industries. His expertise includes engineering and construction management for material handling systems and processing facilities, in addition to mine site construction projects.

Dennis N. Kostic - President and CEO
Mr. Kostic is a mining engineer with over 37 years of engineering and operations experience in the mining industry in both surface and underground mining. His experience includes extensive mine layout and design expertise, multiple seam mining, surface and underground mine operational assessments, mine property evaluations, due diligence investigations and coal market studies throughout the US, Australia, Brazil, Canada, India, Kazakhstan, Poland, South Africa, Spain, United Kingdom, and Venezuela. He has held senior level engineering and operating positions with several major US coal mining companies.

Walt Mueller, Jr. - Technical Advisor
Mr. Mueller is a mining engineer with more than 41 years of operations and engineering experience. He has held senior management positions for both surface and underground mining operations throughout the US and Canada. He has specific expertise in longwall mining, in addition to proficiency in all other types of underground mining methods. Skilled in both engineering and operations, his experience relates to small mines and large, multiple unit operations.

John W. Sabo - Executive Vice President
Mr. Sabo has 42 years of operating, engineering and consulting experience in the mining and energy industries. He has specific expertise in evaluation of surface and underground mining operations reserves, mineability, engineering and operations. His experience includes operational analysis, due diligence evaluations, mine planning, feasibility studies and the valuation of mining properties throughout the US, Canada, Mexico, Czech Republic and South Africa. He has held senior level positions with two other US consulting companies.

Rick W. Thomas - Vice President
Mr. Thomas is a mining engineer with more than 28 years of experience in engineering, operations management, and mergers and acquisitions. His experience includes engineering and operations management at both surface and underground coal mining operations throughout the United States, in addition to industrial minerals operations. He has significant experience in surface and underground mine planning, evaluations and contract mining, including contractor selection and contract mining agreements.

Linda R. Torre - Senior Mining/Environmental Engineer/Associate
Ms. Torre is a mining and environmental engineer with over 25 years of experience in mine planning, budgeting and environmental engineering and permitting. Her experience includes operations and economic analysis of surface and underground mining operations and the evaluation of environmental and permitting compliance.

Tom A. Tveten - Chief Geologist
Mr. Tveten has over 37 years experience in geological evaluations involving all of the major coal basins in the United States as well as Australia, Canada, The Republic of South Africa and Venezuela. His career has involved assignments at both surface and underground coal mining operations as well as reserve analysis and mine feasibility related to reserve acquisitions. He has significant experience in computer modeling of all types of mineral deposits.


WEIR is supported by an extensive network of engineering associates, technical personnel, CADD specialists, and an administrative staff.