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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 "Toxicity and Environmental Properties of Cyanide" is the fourth in the series of six courses. This course covers the sources and toxicology of cyanide; its toxicity to aquatic organisms, birds and mammals; the toxicity of related compounds and mine waste; and environmental exposure and monitoring. This course comprises 13 viewing sessions, each of 30 - 60 minutes duration, plus supporting figures, tables and references, and three interactive reviews that confirm achievement of the learning objectives. Authors Dr. Terry Mudder Dr. Karen A. Hagelstein   Duration 12 Hours Access 90 Days Category Environment Level Specialize Published  December 13, 2006 Updated January 27, 2021 ​Need to train a team? Whether you're looking for a customized training program or developing a team, we have enterprise solutions to fit your needs. Learn More Read More

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 "Geochemical Properties and Environmental Fate of Cyanide" is the third in the series of six courses. This course covers the attenuation mechanisms applicable to cyanide and their effectiveness in different metallurgical and environmental contexts, including surface ponds, tailings, heap leach, soil and groundwater. This course comprises 12 viewing sessions, each of 30 - 60 minutes duration, plus supporting figures, tables and references, and three interactive reviews that confirm achievement of the learning objectives. Authors Dr. Terry Mudder   Duration 10 Hours Access 90 Days Category Environmental Level Specialize Published August 3, 2006 Updated October 13, 2021   ​Need to train a team? Whether you're looking for a customized training program or developing a team, we have enterprise solutions to fit your needs. Learn More Read More

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 "Analysis of Cyanides" is the second in the series of six courses. This course covers the methods available for measurement and analysis of different categories of cyanide, and discusses the advantages, disadvantages and problems associated with them. It also covers sources of analytical interference in cyanide analysis, variability and accuracy, and measurement of low levels of cyanide in the environment. This course comprises 10 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 Authors Dr. Terry Mudder Duration 8 Hours Access 90 Days Category Environment Level Specialize Published July 10, 2006 Updated July 23, 2021 ​Need to train a team? Whether you're looking for a customized training program or developing a team, we have enterprise solutions to fit your needs. Learn More Read More

This is the first course in the six-course Cyanide Management in Mining series. This course assumes knowledge of environmental engineering or mineral processing. The chemistry of cyanide solutions is unique with its ability to dissolve gold and silver. Cyanide is highly selective with respect to combining with gold and silver; in solution it forms complexes with other metals, such as mercury, zinc, copper, iron, and nickel. The formation of these other metal complexes partially account for the consumption of cyanide in gold extraction circuits and generate solutions that can be difficult to treat and analyze. Although chemical replacements for cyanide have been investigated for decades, it remains the exclusive extraction reagent or lixiviant of choice for over 90% of the gold recovered. This is due to a combination of availability, effectiveness, economics, and an ability to use and manage cyanide with acceptable risk to humans and the environment. Cyanide Management in Mining Series The Cyanide Management in Mining course series provides the learner with the necessary background for developing a cyanide management plan that meets the unique requirements of each operating mine. Due to 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 series consists of the following courses. 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 Authors Dr. Terry Mudder Duration 3 Hours Access 90 Days Category Environment Level Specialize Published: August 17, 2018 Updated: July 19, 2021 ​Need to train a team? Whether you're looking for a customized training program or developing a team, we have enterprise solutions to fit your needs. Learn More Read More

Reclamation and Revegetation for Mines in Arid Climates is intended for environmental specialists in private practice and governmental agencies. The purpose of this course is to present mining related reclamation based on practical and actual experience. The course presents actual mine reclamation practices that worked or didn’t work. The focus of this course is on base and precious metal mining operations in the western US, but the reclamation practices are applicable in other regions of the US and abroad. The course presents all aspects related to reclamation of mines from the initial baseline studies to final reclamation and bond release. Much of the approach is based on requirements by governmental agency rules and regulations. Reclamation programs are based on site specific conditions and baseline studies. These studies and surveys may start by examining natural revegetation in the region and on old mine disturbance. The goal is to create systems based on ecosystem analysis (prior knowledge) and sound ecological processes and patterns. The ecosystems established will be stable and sustainable based on the environmental settings, since local ecosystems are a function of climate, soils, biota; animals/vegetation, time, cycles, and energy flow. The goal is to match current ecosystems and promote diversity in compatibility with the surrounding landscape. Authors Dr. Sam Bamberg   Duration 12 Hours Access 90 Days Category Environment Level Specialize Version Date March 13, 2013 ​Need to train a team? Whether you're looking for a customized training program or developing a team, we have enterprise solutions to fit your needs. Learn More Read More

In theory, mine closure is simple; in practice, it is difficult. In this course, we will start with the simple and then proceed to the more difficult, which we will explain in terms that will enable you to deal with the many issues that arise as you plan and implement mine closure. The simple part of mine closure may be set down as three objectives: remove equipment and structures; stabilize waste piles; and control spread of pollutants from the closed site. As we shall see as we progress through this course, these three simple objectives quickly give rise to many questions and knotty issues, including: Who pays? Who says enough is enough? And, What is to become of the site in the long term? Many more related and difficult issues arise. Reading only this course will not enable you to solve all the problems. Each mine site is unique and demands a unique closure plan and approach. You will undoubtedly have to formulate the specifics of the closure plan for your mine by way of many studies, meetings, reports, and deep deliberations. This course will attempt to set down the current state of ideas, practice, and possibilities, so that you are empowered to move forward to success at the mine where you are part of a team charged with mine closure. Author Jack A. Caldwell Duration 15 Access 90 days Category Environment Level Cross Train Version May 11, 2011   ​Need to train a team? Whether you're looking for a customized training program or developing a team, we have enterprise solutions to fit your needs. Learn More     Read More

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