Staff: Operations Managers
 Mark
Cross — Tucson Operations Manager / President
Dennis Shirley
— Scottsdale Operations Manager / Vice President
Lyle Davis
— Santiago de Chile Operations Manager
Lyle Davis, P.E., Hydrologist
Operations Manager, Santiago de Chile Office
Qualifications at a Glance
» 25 years of experience
» B.S. Agricultural Engineering, Colorado State University, 1976
»
M.S. Agricultural Engineering, Colorado State University, 1978
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Specialty areas: Mining hydrology and groundwater modeling
Profile
 Lyle Davis joined M&A in August 2005, helping us broaden the hydrologic services we offer to the mining sector. With experience in hydrogeology, surface water hydrology, and hydraulics, Lyle has a wide range of expertise. He has been involved in nearly every aspect of mining hydrology, including surface and underground mine dewatering, hydrologic permit support, water supply investigations, and analysis of potential water quality impacts.
He also specializes in groundwater modeling, aquifer test design and interpretation, and vadose zone investigations. He is a Registered Professional Engineer in Arizona, Colorado, and California.
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Errol L. Montgomery