Dr. Dale Rucker

Chief Technical Officer, Tucson, Arizona

Dr. Dale’s Snapshot

Title: Chief Technical Officer
Degree: PhD in Hydrology & Water Resources
University: University of Arizona
HGI Start Date: : 2004

Home Office: Tucson, Arizona
Specialty: Technology, processing, modeling, writing
Escape Activities: Hiking, travel, and running


Dr. Dale Rucker is the Chief Technical Officer (CTO) for HGI. He is a geophysicist and hydrogeologist with a strong background in engineering and publishing. Dale is responsible for the company’s technical direction, including developing new hardware, software tools, and interpretation for geophysical methods aimed at solving hydrological and engineering problems. As CTO, Dale has been instrumental in bringing to HGI new geophysical-based technologies to be used for solving complex problems involving water resources, mining, engineering, and geotechnical issues.

Over the past 15 years, Dale’s research areas have focused on rapid monitoring of dynamic subsurface processes, such as subsurface injections, focused recharge, and remediation. To help with this effort, he guided the development of a large multi-channel resistivity system (Geotection) with a real-time evaluation component to help optimize reagent delivery or for use in estimating hydraulic parameters. Since its development, the system has been used to monitor changes in subsurface conditions related to injection for secondary recovery of metals from heaps, in situ recovery of metals, hillslope hydrology at the Biosphere, and surficial recharge.

Dale enjoys challenging opportunities that do not fit the normal paradigm of geophysical problems. He has published peer-reviewed papers and book chapters on subjects relating to mining, karst, hydrogeology, and geophysics. Dale has longstanding memberships in SEG, EEGS, AGU, SME, EAGE, and is also the editor-in-chief of the Journal of Environmental and Engineering Geophysics (JEEG).

Dale holds a BS in Mechanical Engineering, an MS in Civil Engineering, and a Doctorate in Hydrology and Water Resources from the University of Arizona.




Investigating the effective resistivity of reinforced concrete waste storage tanks at the Hanford Site

Geoelectric Characterization of Hyporheic Exchange Flow in the Bedrock-Lined Streambed of East Fork Poplar Creek, Oak Ridge, Tennessee

Bedrock architecture, soil texture, and hyporheic zone characterization combining electrical resistivity and induced polarization imaging

Electrical resistivity monitoring of lower Rio Grande River-Groundwater intermittency

Standard, Random and Optimum Array Conversions from Two-pole Resistance Data

Deep well rinsing of a copper oxide heap

Drawing down the remaining copper inventory in a leach pad by way of subsurface leaching

Real-time electrical monitoring of reagent delivery during a subsurface amendment experiment

Investigating motion blur and temporal aliasing from time-lapse electrical resistivity

A Modified Wenner Array for Efficient Use of Eight-Channel Resistivity Meters

Dale at work:

Articles by Dale

Heap Leach Pad Damage Caused by Haul Roads

Heap Leach Investigations Could Lead to Big Payback

Side Slope Seepage Investigations