From exploration to reclamation, mining impacts economies, societies and the environment by producing the materials necessary for modern life. At each stage of the mining life cycle, we work to create value for all stakeholders that will last beyond the life of our projects while looking out for the well-being of the environment. In this blog, the first of a 3-part series, we explore the life cycle of the various mining stages at Eldorado GoldInquiry Online
Every Eldorado Gold project has two fundamental inputs: relationships and resources. We have a number of business units that manage these inputs, including Operations, Exploration, Corporate Development, Administration & Legal, Engineering, Human Resources, External Affairs and Finance
Effectively managing our relationships and resources can lower operating costs, reduce site disruptions, secure mine licences and permits, and accelerate Company growth and expansion. Strong relationships with all stakeholders allow us to transform resources into sustainable value
They assess early and advanced-stage exploration projects and conduct near-mine and grassroots exploration programs with the goal of adding value through discovery in order to increase our resources and reserves
During grassroots exploration, our Exploration teams visit prospective areas to introduce themselves to local communities and conduct geological surveys and sampling programs. Often, our Exploration teams partner with other companies to benefit from their local knowledge and experience
Whenever possible, we work with local suppliers and hire local employees and contractors in order to share the value generated by our mineral-exploration investments with communities. If results indicate a mineralized deposit, drilling programs are undertaken to define the resources and reserves that inform the evaluation and development stage of a project
Throughout the environmental permitting process, we engage and consult with local communities, businesses and government to address the social and environmental impacts of our projects. By considering the technical, social and environmental parameters of the project, we are able to determine the capital costs required for development and the longer-term economics of the project. At this point, capital investment and construction decisions are made based on the economic, social and environmental merits of the project
Following, in the second part of this series, we’ll look at the next stages in our mining life cycle: Construction; and Mining and Processing. More information can also be found in our 2019 Sustainability Report
Great!I am quite happy and excited about this blog. Pains taking approach adopted by Eldorado Gold makes it clear that it’s a responsible organisation. Any organisation that forms and maintains a good relationship with host communities through corporate social responsibility would prosper in that environment. It’s a partnership! This is very necessary since it takes about 10 -20 years + for the life cycle of a mine to be completed
The gold prices used in this table and chart are supplied by FastMarkets. Where the gold price is presented in currencies other than the US dollar, it is converted into the local currency unit using the foreign exchange rate at the time (or as close to as possible)
More gold is recovered by cyanidation than by any other process. In cyanidation, metallic gold is oxidised and dissolved in an alkaline cyanide solution. When gold dissolution is complete, the gold-bearing solution is separated from the solids
With ores of higher gold content (greater than 20 grams of gold per tonne of ore), cyanidation is accomplished by vat leaching, which involves holding a slurry of ore and solvent in large tanks equipped with agitators
For extracting gold from low-grade ores, heap leaching is practiced; huge heaps are sprayed with a dilute solution of sodium cyanide, and this percolates down through the piled ore, dissolving the gold
The Miller process uses gaseous chlorine to extract impurities when gold is at melting point; impurities separate into a layer on the surface of the molten purified gold. The Miller process is rapid and simple, but it produces gold of only about 99.5 percent purity.
The Wohlwill process increases purity to about 99.99 percent by electrolysis. In this process, a casting of impure gold is lowered into an electrolyte solution of hydrochloric acid and gold chloride. Under the influence of an electric current, the gold migrates to a negatively charged electrode (cathode), where it is restored to a highly pure metallic state, leaving the impurities as a separate solution or residue
The mining process is responsible for much of the energy we use and products we consume. Mining has been a vital part of American economy and the stages of the mining process have had little fluctuation. However, the process of mining for ore is intricate and requires meticulous work procedures to be efficient and effective. This is why we have broken down the mining process into six comprehensive steps.
The first stage in the mining process calls for skilled workers or AI to apply their geological knowledge in identifying areas where a particular ore can be found. There are two methods workers and machines can employ during this stage:
The digging of tunnels and sink shafts when the ore—or mineral deposit—is below the surface. Hand tools such as chisels, hammers, and wedges are used to break up waste rock, Sometimes, areas must even be blasted in order to loosen rock so workers can more easily separate the ore from the waste rock—which are mined separately.
The next step, once the ore is excavated, is to separate the waste rock and ore using primary crushers, located at the open pit mine site. At this point, larger rocks are broken down to a size better suited for the conveyor belt to transport
Once the ore has been processed and shipped away for sale, the final step of the mining process begins. The land which was used to obtain these resources must be rehabilitated as much as possible. The objectives of this process include:
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