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DST Signs a GlassLock Process Engineering Contract with another Gold Mining Company

  July 10, 2020

MONTREAL, QUEBEC, July 9, 2020 – Dundee Sustainable Technologies Inc. (“DST” or the “Corporation”) (CSE: DST) is proud to announce that on June 8, 2020, it has entered into an agreement (the “Agreement”) with a gold mining company (the “Customer”). The mandate consists of delivering an engineering package for a plant utilizing DST’s proprietary GlassLock Process™ (“GlassLock” or the “Technology”) for the stabilization of legacy arsenic bearing material at the Customer’s operating gold mine in West Africa.


In Q1 2020, DST initiated and completed a preliminary metallurgical test program with the same Customer. Over 40 kg of arsenic and gold bearing material were received at DST’s technical facilities in Canada. DST successfully combined gold recovery with the stabilisation of arsenic using GlassLock. A glass product containing over 15% arsenic was generated and successfully met the requirements of the United States Environmental Protection Agency's (EPA) toxicity characterization leaching procedure (“TCLP, Method 1311”).


As a result, the Customer awarded the engineering mandate to DST to perform process optimization and an engineering study at the pre-feasibility (+/-25%) level. The Agreement includes engineering fees in the amount of CAD$101,000 to be paid to DST for this work as per its Business Plan to generate revenues for the Corporation while the Technology is progressing toward implementation. Final Report is due at the beginning of September 2020.


GlassLock is providing designed solutions for the sequestration of arsenic in a stable glass form. DST has successfully demonstrated its Technology at the industrial demonstration scale, where arsenical material was processed to generate vitrified arsenical glass, containing up to 20% arsenic while meeting the TCLP Method 1311. GlassLock is becoming an effective and cost attractive technique to segregate arsenic and is therefore opening new opportunities for arsenic bearing precious metals deposits, concentrates or contaminated sites considered to contain too much arsenic to be exploited.


This Agreement is another major achievement in DST's commercialization efforts. The Corporation is proudly collaborating with such strategic partners towards the implementation of commercial scale operations using DST’s Technology.


The Corporation is also pleased to announce that it has obtained an approval from Investissement Quebec to extend the maturity date of its convertible debenture from July 13th 2020 to August 13th 2020; with all the other terms and conditions remaining unchanged.

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