Events

Mining Industry addresses technical issues and regulatory, stakeholder and community pressures at SME Annual Conference

Industry-leading experts from CH2M will share insights on innovations and applications of Mine Water Treatment.

With global demand driving the mining and minerals sectors, the industry is facing increasing regulatory, stakeholder, and community pressures. With the theme of Creating Value in a Cyclical Environment, the Society of Mining, Metallurgy and Exploration SME Annual Conference and Expo is being held Feb. 19-22, in Denver, Colorado.  

CH2M experts are featured presenters in the Technical Program, addressing important water treatment issues for mines. CH2M’s Jim Stefanoff and Robert (B.T.) Thomas are contributing presentations on innovations and applications of Mine Water Treatment.

  • Deciphering and Improving Sludge Quality at the Summitville Mine Water Treatment Facility, Colorado: Tuesday, Feb. 21: 9:25 am, Room 102 - J. Stefanoff, CH2M  
  • Passive Treatment of Mine Effluent from the Crystal and Bullion Mines, Basin Mining Area Superfund Site, Montana - Field Pilot and Laboratory Column Treatability Studies: Tuesday, Feb. 21: 10:55 am, Room 102 - Robert (B.T.) Thomas, CH2M

The Summitville Mine Water Treatment Facility, constructed at 11,500 feet near the top of the Alamosa River watershed, treats mining-influenced water to improve downstream water quality and habitat. Due to challenging influent with high concentrations of ferric iron, aluminum, and other metals, it has experienced significant operational challenges due to viscous, sticky sludge, which is relatively slow to dewater and does not achieve desired density. CH2M was contracted to identify options, with the primary goal of producing sludge of high weight percent solids with good handling characteristics and dewaterability. CH2M conducted onsite pilot testing which optimized removal of ferric iron and aluminum, improving sludge properties and density.

The Bullion and Crystal Mines are abandoned mine sites located between Helena and Butte, Montana. The adit discharge at both mine sites is acidic and contains elevated concentrations of dissolved elements/metals. Field-scale pilot and lab column studies were performed in advance of preliminary design of passive treatment systems (PTS) to mitigate adit discharge at both sites. This presentation will provide experimental design and results of the field pilot and laboratory column studies, contaminant removal rates, and recommended full-scale design at both sites.

CH2M supports the mining industry from conception through construction and on to closure and asset recovery. CH2M is the recent winner of the 2016 Climate Change Business Journal Award for Advancing Best Practices in Climate Adaptation and Resilience in the Mining Industry.

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