Examlex
Magnetic lines of force, often referred to as ____ lines, do not cross each other.
High-Grade Mineral
Minerals that contain a high percentage of a desired material, making them economically feasible to mine.
Economically Depleted
Refers to a condition where a resource has been exploited to the point where it is no longer profitable to extract or use.
Mineral Resource
Natural concentrations of minerals or, in some cases, organic material, that can be extracted and processed into useful products at a profit.
Diamonds
A hard, precious stone made of crystalline carbon, renowned for its brilliance and often used in jewelry.
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