Cyanide Management in Mining - 5: Water Management and Discharge Strategies

5 modules


Course Length
6 hours

Edumine Courses

31 Oct 2019



The cyanidation process for the extraction of gold and silver from ore has been employed since 1898 when it was first used in New Zealand and Africa and soon after in the United States. It is a very efficient process capable of extracting gold in amounts of less than one percent of an ounce from a ton of rock with over 90% efficiency.

Because of the environmental risks, a cyanide management plan is of critical importance to a mining operation. The lack of such a plan, in some cases, has contributed to adverse environmental incidents involving cyanide. The United Nations Environment Programme (UNEP) is developing an international code for the management of cyanide. Implementation and adherence to this code, augmented by experienced scientific and engineering judgment, will help reduce both the number and severity of environmental incidents involving cyanide.

The "Cyanide Management in Mining" courses attempt to provide the user with the necessary background for development of a cyanide management plan that meets the unique requirements of each operating mine. The full complement of courses in the series includes:

  • Chemistry of Free and Complexed Cyanide
  • Analysis of Cyanides

  • Geochemical Properties and Environmental Fate of Cyanide

  • Toxicity and Environmental Properties of Cyanide

  • Water Management and Discharge Strategies

  • Treatment Technologies for Cyanide and Related Compounds

"Water Management and Discharge Strategies" is the fifth in the series of six courses. This course discusses components of a water management plan including water balance, cyanide management, water management practices and treatment and discharge facilities.

This course comprises 8 viewing sessions, each of 30 - 60 minutes duration, plus supporting figures, tables and references, and two interactive reviews that confirm achievement of the learning objectives.


  • Dr. Terry Mudder

Duration 6 Hours
Access 90 Days
Category Environment
Level Specialize
Published  December 18, 2006
Updated October 19, 2021


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Learning Outcomes

  • Discuss the concepts of water balance and cyanide mass balance and their roles in the cyanide management plan.

  • Discuss strategies for treatment and discharge of mine waters into the environment.

  • Apply the knowledge gained to development of a cyanide management plan.

Recommended Background

  • A degree or diploma in environmental engineering or mineral processing.

  • Experience of gold or silver extraction with cyanide.


By completing/passing this course, you will attain the certificate Edumine Certification

Learning Credits

Table of contents
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Module 1: Water Management
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Knowledge Check - Module 1: Water Management
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Module 2: Treatment and Discharge
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Knowledge Check - Module 2: Treatment and Discharge
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