Toxic metal mine tailings Acid leaching from mining residues
Worldwide, acid mine drainage is considered the most serious environmental problem in the mining sector. Acid mine drainage occurs when the sulphides contained in mine tailings are exposed to oxygen and water to become sulphuric acid. The result pollutes the watershed causing considerable damage to the environment and imposing expensive solutions on mining companies as well as governments.
Mining produces 15 billion tonnes of residues each year, adding to the material produced for hundreds of years.
The Encyclopedia of World Problems and Human Potential is a unique, experimental research work of the Union of International Associations. It is currently published as a searchable online platform with profiles of world problems, action strategies, and human values that are interlinked in novel and innovative ways. These connections are based on a range of relationships such as broader and narrower scope, aggravation, relatedness and more. By concentrating on these links and relationships, the Encyclopedia is uniquely positioned to bring focus to the complex and expansive sphere of global issues and their interconnected nature.
The initial content for the Encyclopedia was seeded from UIA’s Yearbook of International Organizations. UIA’s decades of collected data on the enormous variety of association life provided a broad initial perspective on the myriad problems of humanity. Recognizing that international associations are generally confronting world problems and developing action strategies based on particular values, the initial content was based on the descriptions, aims, titles and profiles of international associations.
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