Lakewood, CO

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Justin W. Knudsen, P.E.

Senior Consultant I

Mr. Knudsen is a Professional Engineer (Civil/Geotechnical B.S. and M.S.) and project manager with more than 14 years of experience in the mining industry applying his geotechnical expertise designing…Read more (Español)

Lima, Perú

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Julio Juarez, CIP

General Manager, Lima

Mr. Juarez is a geological engineer with more than 15 years of experience providing geotechnical, geological and geo-environmental services to the international mining industry…Read more  (Español)

Tucson, AZ

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Marvin Silva, PhD, P.E., P.Eng.

Senior Consultant II

Dr. Marvin Silva is a senior geotechnical engineer with over 26 years of experience in the geotechnical engineering field. He is experienced in geotechnical studies, planning…Read More (Español)

Salt Lake City, UT

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Jared Purdy, P.E.

Senior Consultant I

Mr. Purdy has 17 years of professional experience in mining geotechnics, geotechnical investigations, foundation design, and construction management projects. Specialties include…Read More (Español)

Tucson, AZ

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Francisco Barrios, P.E., MBA

Project Manager

Mr. Barrios has over 13 years of experience in the civil/environmental engineering field for the mining industry. He is experienced in design, planning, construction, and project…Read more  (Español)

Lakewood, CO

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Phillip E. Brown, CPG

Senior Hydrologist/Engineer

Mr. Brown has over 37 years of experience in water quality and pit inflow evaluation, pit and underground mine dewatering design, well drilling and aquifer testing, groundwater contamination…Read More (Español)

Salt Lake City, UT

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Jim A. Willis, P.E.

Project Professional III

Mr. Willis is a Professional Engineer with over 12 years of experience in civil design and water resource engineering. As a Project Engineer he has…Read More  (Español)

Lakewood, CO

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Adrien Butler, P.E.

Project Professional III

Ms. Butler is a Project Civil Engineer with 11 years of professional civil engineering experience in the mining industry. Her experience has focused on the design of tailings storage facilities, heap leach pads, and…Read More  (Español)

Lakewood, CO

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Jiny V. Carrera, E.I.T.

Project Professional II

Ms. Carrera is a Project Geotechnical Engineer with more than 10 years of experience in the mining industry. She has extensive experience with…Read more  (Español)

Lima, Perú

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Marco Noa Villanueva, CIP

Staff Engineer III

Mr. Noa is a Civil Engineer with over 13 years of experience in consulting and construction of civil works. His experience includes infrastructure projects for the mining industry, designing and…Read more (Español)

Lima, Perú

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Vladimir Miñano, CIP

Staff Engineer III

Mr. Miñano is a civil engineer with 11 years of experience in civil design, geotechnical engineering, and fieldwork for mining infrastructure projects, from conceptual stages until closure…Read more  (Español)

Lakewood, CO

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Troy Holm

Senior Civil 3D Designer

Mr. Holm has over 20 years of experience in CAD design, drafting, quantity calculation, 3D visualization and animation in the Civil and Mining Engineering industries. His experience…Read More (Español)

Lakewood, CO

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Bob Beach, E.I.T.

Staff Engineer III

Mr. Beach is a Geological Engineer with over 6 years of engineering experience. Mr. Beach’s expertise within the mining industry includes…Read more (Español)

Lima, Peru

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Alcides Panez

Senior CAD Designer

Mr. Panez has more than 5 years of experience in Topography/CAD design. Project experience includes calculating earthwork, design of mining facilities such as…Read More (Español)

Elko, NV

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Nettie Quintana

Sr Engineering Technician

Ms. Quintana is a Senior Engineering Technician with 14 years of experience in the mining industry. Nettie supports environmental management, geotechnical monitoring, and construction quality assurance and…Read more (Español)

Lakewood, CO

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Sean Robinson, E.I.T.

Staff Engineer II

Mr. Robinson is an engineer in training (E.I.T.) with education and experience in hydraulic and hydrologic engineering. Sean has over 4 years of experience performing…Read More  (Español)

Lima, Peru

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Jesús Torres

Staff Engineer II

Mr. Torres is a Civil Engineer with over 7 years of professional experience in civil design, hydraulics, and hydrology. His expertise has been applied within the mining industry to tailings storage facilities…read more (Español)

Salt Lake City, UT

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Johnny Prettyman, E.I.T.

Staff Engineer I

Mr. Prettyman is a staff engineer with 3 years experience in civil design and hydraulics.  His expertise lies in hydraulic design, pipeline design, and water resources…Read More  (Español)

Lakewood, CO

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Jim Shultz

Business Development

Mr. Shultz has over 40 years of experience in the mining services industry.  Experience includes executive management, project management, business development, marketing and strategic planning in…Read More  (Español)

Lakewood, CO

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Becky Kohl-Fuller

Finance Manager

Ms. Kohl-Fuller has over 28 years of experience in Finance, Accounting, and International Business. Her present work includes management of cash, assets, invoicing, accounts payable and receivable…Read More  (Español)

Elko, NV

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Tracey L. Rozelle

Project Assistant II

Mrs. Rozelle has over 23 years of experience in document preparation, editing, and production.  She serves in a vital role for ensuring report integrity for technical documents…Read More  (Español)

Lakewood, CO

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Beth Knudsen

Administrative Manager

Mrs. Knudsen has over 22 years of experience with Office Administration and Accounting. She has experience with…Read More  (Español)

Salt Lake City, UT

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Kari Kowalewski

Project Assistant

Mrs. Kowalewski has over 23 years of experience with Office Administration and Customer Service Support…Read More  (Español)

Lima, Peru

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Elizabeth Ayala

Administrative and Accounting Chief, Lima

Ms. Ayala is a Public Accountant from the Universidad Privada del Norte with 14 years of experience in the administrative, economic and financial areas of the public and private sectors with solid expertise in…Read more (Español)

Lima, Peru

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Carla Cárdenas

Administrative Assistant, Lima

An Executive Secretary by profession, Ms. Cárdenas has 10 years of experience in the private sector; specializing in office programs, accounting and advanced English. She has extensive knowledge in document preparation, correspondence…Read more (Español)

Lakewood, CO

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Dessire Lopez

Administrative Assistant

Ms. Lopez is the Administrative Assistant for the Lakewood, Colorado office. She assists with the everyday administrative functions of the office including translation, project filing, running errands, and providing support to the professional and engineering staff…Read More (Español)