Titlebook: Economic Evaluations in Exploration; Friedrich-Wilhelm Wellmer Textbook 19891st edition Springer-Verlag Berlin Heidelberg 1989 Exploration

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Equity Calculations,Equity calculations will be considered under two aspects:

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https://doi.org/10.1007/978-3-662-02578-9Exploration Geology; Mineral Deposits; Resource Estimation; Statistics; economic geology; mineral resourc

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Springer-Verlag Berlin Heidelberg 1989

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Metal Prices,For metals (see Chap. 1.2.7) the London-based, twice-weekly “Metal Bulletin” is the standard reference. The “Engineering and Mining Journal” publishes monthly price surveys for metallic and non-metallic commodities.

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Conversion of Geological Data into Mining Data for Ore Deposits,has been put on the market. The geological grades will seldom correspond with the grades of the mill head ore. As a rule the ore is diluted by inclusion of wall rock and losses occur during beneficiation. These factors have to be taken into account before revenues can be calculated.

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Production Lifetime, amount of ore mined. When considering the production costs, the output per unit of time must also be taken into account. The greater the output per day or per year, the lower are the costs per ton of ore. This effect is called “economics of scale”.

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Comparison of Deposits,r in production or still in the preproduction stage. The best comparison is an eco nomic one. In the preliminary stage, however, when only order of magnitude para meters are available, other “semi-economic” methods of comparison are also used.

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https://doi.org/10.1007/978-3-030-47247-4 the most important conversions and conversion factors mainly related to the “imperial” system of measures common in the Anglo-American field are listed. Although many countries, such as Canada or Australia, have adopted the metric system, time and again the exploration geologist will come across no