Shawn Calendine
 | Shawn’s Snapshot:Title: Marketing & Development Manager View Shawn’s Resume Here |
About Shawn Calendine:
Shawn Calendine is the Marketing & Development Manager at hydroGEOPHYSICS (HGI). His background and experience have given a robust professional quality to HGI’s marketing environment while creating long-term value for HGI by developing strong client relationships. Shawn knows what truly drives conversions and solutions for industry challenges—and it’s not by following the latest marketing fads. It’s connecting with people and understanding their needs. It’s building trust through integrity and flexibility.
Prior to joining HGI, Shawn served as the Director of Development & Marketing for an environmental, nonprofit. His focus was on educational and hands-on programs, emphasizing personal action in waste reduction, land stewardship, and urban forestry. As a nonprofit executive, Shawn adapted to challenges readily. He helped organize a series of conferences focused on climate change in the desert southwest while also establishing fundraisers supporting projects, programs, and longterm organizational goals.
Since joining HGI in 2005, Shawn has worked in many positions. His initial geophysical experience started as part of a team managing the leak detection and monitoring (LDM) program for nuclear waste tanks at the Hanford Site in eastern Washington State. The project monitored changes in subsurface conditions associated with the stability of nuclear waste tanks. Following his work with the LDM program, he moved into field geophysics and also spent five years as HGI’s Environmental Health & Safety Officer.
In addition to his work as a marketing consultant, Shawn participates as a board member and member for several Tucson nonprofit organizations including the Arizona Hydrological Society (AHS), Tucson Clean & Beautiful (TBC), and a participating member of the Society for Mining, Metallurgy & Exploration (SME).
Shawn holds Bachelors of Science degrees in both Environmental Science and General Science with a minor in Biology from Portland State University.
Shawn in Action:
See Shawn’s Papers & Presentations:
 | Non-Invasive Geophysics for Active Mining Sites publication | Oct 1, 2018 Tailings & Mine Waste Symposium |
| Non-invasive subsurface geophysical technologies are being applied within active mine sites in new and innovative ways to improve safety, aid production, and manage environmental challenges. The majority of contemporary subsurface investigative techniques rely on invasive and extensive drilling programs, which use point source information to infer the broader picture. Geophysical methods, on the other hand, offer a robust alternative that provides improved targeting options to enhance drilling programs. Geophysical methods can be applied over many stages of the mine lifecycle; including exploration, preconstruction investigations and characterization, heap characterization for permeability analysis in leaching operations, injection monitoring for enhanced recovery, and environmental characterization for seepage, acid rock drainage, and plume delineation. In addition, these surveys can provide a high-resolution, spatially-continuous study that when repeated in the same area using the same technique, presents a temporal component assessing subsurface changes over time. This paper gives an overview of geophysical applications applied specifically to solve problems associated with tailings and waste. We show how methods are applied to characterization, monitoring, conceptual site model development, siting of facilities, and how it could be used to monitor stabilization efforts Read More » |
| Electric leak detection and leak location on geosynthetic liners in the mining industry publication | Oct 6, 2016 Tailings & Mine Waste |
| Geosynthetics are an integral component of the mining industry and are routinely used as containment barriers in the mining process. Physical examination of the many different varieties of geosynthetic liners can suggest that these materials are a robust barrier; however, when subjected to the harsh mining environment, they can be easily damaged. Consequently, the potential for leaks to occur over the lifespan of these containment systems is high. Left undetected, these leaks can increase the risk of shutdowns, regulatory fines, and extreme remediation costs. While the theory of electrical leak location works the same for many geosynthetic lined systems, proper consideration towards the potential challenges may determine the survey’s success or failure. In this paper we will present an overview of geosynthetic leak location methods, and possible challenges related to the leak location processes, for fluid covered and earthen covered liners associated with containment structures in the mining industry. Read More » |
Secondary recovery of a copper heap leach | Proceedings of Heap Leach Solutions , 2014 Lima, Peru | |
| Structural uniformity, that is, the degree to which hydraulic properties are homogenized over space, will affect the degree to which ore is effectively leached. Nonuniform ore has been shown to form preferential flow channels and pooling, and to cause slow drainage, which in turn reduces metal liberation and recovery. In this work, we demonstrate that metal recovery can be increased in a nonuniform and underperforming heap by enhancing the leaching process by directly applying solution to deep areas within the pad. Read More » |
| MONITORING ENHANCED RECOVERY OF A MINE HEAP: AN APPLICATION OF REAL-TIME ELECTRICAL RESISTIVITY | SAGEEP 2012 |
| Heap leaching is a large-scale processes of extracting metal from low-grade ore using basic principles of hydrometallurgy. The heap is constructed from stacking rubblized material on an impervious liner. Solution is applied at the surface to dissolve the metal, which is collected at the toe for further processing. The hydrodynamics of solution movement is highly dependent on internal heap structure, as well as mechanical changes that may occur over time. In some cases ore may remain unleached, especially if preferential flow channels are established or if chemical conditions have changed that make extraction untenable. To mitigate against these issues, a direct application of solution to troubled areas deep within the heap may provide a means to enhance recovery of otherwise lost metal. Authors: Dale Rucker, Nigel Crook, Michael McNeill, Jeffrey Winterton, Chris Baldyga, Gillian Noonan, and Shawn Calendine Read More » |
 | The Minors Miner’s Guide to Electric Leak Location Technology for Geomembrane -Lined Containment Systems | SME 2020 |
| Mines have come to depend on geosynthetic liners as an integral component of the mining process, principally as substrates for ponds, heap leach pads, and tailings piles. Leaks can happen at any time in the life of a lined containment system thru poor installation procedures, improper usage, environmental factors, age, and repeated stress from regular use that create tears, rips, or punctures. Left undetected, these failures can cause loss of product, shutdowns, regulatory fines, and remediation costs. For over thirty years, electrically- based leak location methods have been the primary technology for finding breaches in lined structures. However, mine operators often do not understand leak location technology or how to prepare for a leak location survey. In this presentation, we will discuss leak location methods, equipment, and associated challenges with the leak location process for lined containment systems in the mining industry. Read More » |
| How Ice Age Floods Helped Create the Hanford Nuclear Site And… Some Hanford History | Arizona Hydrological Society 2018 |
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| Non-Invasive Geophysics for Active Mining Sites | AEMA 2018 |
| This paper discusses an overview of geophysical applications for subsurface investigations on mining sites including: heap permeability, injection for enhanced recovery, and managing subsurface environmental challenges. Read More » |
| Electric leak detection and leak location on geosynthetic liners in the mining industry | Tailings & Mine Waste 2016 - AEMA 2017 |
| Geosynthetics are an integral component of the mining industry and are routinely used as containment barriers in the mining process. Physical examination of the many different varieties of geosynthetic liners can suggest that these materials are a robust barrier; however, when subjected to the harsh mining environment, they can be easily damaged. Consequently, the potential for leaks to occur over the lifespan of these containment systems is high. Left undetected, these leaks can increase the risk of shutdowns, regulatory fines, and extreme remediation costs. While the theory of electrical leak location works the same for many geosynthetic lined systems, proper consideration towards the potential challenges may determine the survey’s success or failure. In this presentation, we will present an overview of geosynthetic leak location methods, and possible challenges related to the leak location process for fluid covered and earthen covered liners associated with containment structures in the mining industry. Read More » |