from The Century Dictionary and Cyclopedia

  • n. In mining, the mechanical treatment of ores by processes depending on physical laws and physical properties of minerals, such as specific gravity, magnetic or electric properties, etc. The principal objects of ore-dressing are the concentration of low-grade ore, the purification of ores by the removal of objectionable material, and the separation of two or more useful minerals occurring in the same ore in order to render each more valuable.


Sorry, no etymologies found.



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