apiary
发表于 2025-3-26 22:27:46
Equity Calculations,Equity calculations will be considered under two aspects:
造反,叛乱
发表于 2025-3-27 02:00:04
https://doi.org/10.1007/978-3-662-02578-9Exploration Geology; Mineral Deposits; Resource Estimation; Statistics; economic geology; mineral resourc
Synchronism
发表于 2025-3-27 05:23:07
Springer-Verlag Berlin Heidelberg 1989
1FAWN
发表于 2025-3-27 10:56:07
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Habituate
发表于 2025-3-27 17:25:32
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.
伙伴
发表于 2025-3-27 21:19:17
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.
CORD
发表于 2025-3-27 23:12:08
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”.
amenity
发表于 2025-3-28 03:58:12
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.
险代理人
发表于 2025-3-28 08:46:34
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熔岩
发表于 2025-3-28 12:20:06
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