February 17, 2020

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Evan Cox and Fabrizio Mascioni to Present on Mining and Metallurgy at MineXchange 2020 SME Annual Conference & Expo

Evan Cox, M.Sc. (Ontario) and Fabrizio Mascioni, R.G. (Arizona) will present at the MineXChange 2020 Society for Mining, Metallurgy & Exploration (SME) Annual Conference & Expo in Phoenix, Arizona on February 23-26, 2020.

Other Geosyntec professionals that will be attending are: Helen Thomas, Emmy Gustafson, and Richard Walther (Colorado); Paul Dockweiler and  Jason Fritch (Nevada); Kirk Craig and Matthew Williams (Arizona); Trevor Carlson (Saskatchewan); Dustin Jensen (Washington) and Michael Houlihan (Maryland).   

Be sure to stop by Geosyntec's booth to talk with Geosyntec staff and learn more about Geosyntec's markets and services.

Evan is a Senior Principal Remediation Scientist based in Ontario with more than 30 years of experience focused on managing and directing soil and groundwater remediation projects dealing with emerging and recalcitrant contaminants, and most recently treatment of mine-impacted waters.

Fabrizio is a Senior Geologist based in Arizona with more that 15 years of experience focused on soil, soil gas and groundwater site assessments, remediation, demolition, and hazardous waste abatement.

MineXchange 2020 SME Annual Conference & Expo is the only conference dedicated to all disciplines of mining engineering. Featuring a wide variety of technical sessions and speakers combined with their expansive exhibit hall, MineXchange attracts thousands of mining professionals from around the world.

SME is a professional society whose more than 15,000 membership represents all professionals serving the minerals industry in more than 100 countries. SME provides members with the support and tools they need to grow and enhance their career by offering premier technical content and expanded access to industry resources.


Title: Gravel Bed Reactors (GBRs): Effective Treatment of Metals in Surface Water and Groundwater at Mine Sites
Presenter: Evan Cox (co-authors Silvia Mancini, Rachel James, Andrzej Przepiora, Karen Bechard, Mike Hayes, Kevin Coffey, Kevin Dufresne, Ali Nasseri-Moghaddam)
Time: 10:05 a.m. on February 26, 2020
Abstract: The mining industry continues to require robust, reliable and cost-effective treatment technologies to remove metals and inorganics from surface waters and groundwater at active and abandoned sites. Recently, selenium has emerged as an expensive and challenging problem to solve. Gravel Bed Reactor (GBR™) technology is proving to be effective in treating selenium and nitrate, and GBRs have also been shown to be capable of treating problematic metals such as arsenic, zinc, chromium, uranium, cadmium and lead. GBRs consist of an engineered bed of gravel or waste rock. Amendments such as carbon-based electron donors, nutrients or pH buffers are added to the water at the inlet of the GBR to reduce or immobilize the metals and inorganics. GBRs offer simpler, less engineered systems compared to conventional above-ground water treatment facilities. The need for less infrastructure allows easier installation of smaller systems in less accessible locations such as montane topography, and the potential to treat water at/near the source of impact. This presentation will describe case studies where GBRs have been effectively used to treat selenium, nitrate, arsenic and other metals.

Title: In Situ Sulfate Mediated Metal Remediation (i-SMMR) for the Treatment of Mine Impacted Groundwater
Presenter: Fabrizio Mascioni, (coauthor Trevor Carlson)
Time: 10:25 a.m. on February 26, 2020
Abstract: Groundwater impacts at mining sites are often comingled mixtures of sulfate, associated with the sulfuric acid leach solutions commonly used in mineral extraction, as well as various metals associated with the ore body or host rock being mined. The focus of the research presentation is the development of cost effective and reliable processes for biologically reducing sulfate, yielding biological and abiotic chemical processes that result in the precipitation or geological sequestration of the metal-based contaminants present in the groundwater at mining sites. This presentation describes the development and microcosm testing of SiREM's MB-1® sulfate reduction consortium, grown in water from a metal impacted mine site located in Chile. This research is ongoing and is the basis of new in-situ passive approaches and bioremediation products for remediating metal-based groundwater contamination at mining sites.

More Information

About the event: https://www.smeannualconference.com/
About SME: https://www.smeannualconference.com/index.cfm/ace/about-us/
For consultation regarding Mining and Metallurgy, contact Evan Cox at This email address is being protected from spambots. You need JavaScript enabled to view it. or Fabrizio Mascioni at This email address is being protected from spambots. You need JavaScript enabled to view it..
Learn more about Evan: https://www.geosyntec.com/people/evan-cox
Learn more about Fabrizio: https://www.linkedin.com/in/fabrizio-mascioni-710a1831/