Examlex
While Microsoft Windows has a menu bar at the top of every open window, macOS has a menu bar at the top of the screen, not attached to a window. It contains the menu for the current (active)window.
Copper Mining
The process of extracting copper from the earth, involving digging, blasting, and processing the ore.
Low-Grade Ores
Minerals containing a smaller percentage of valuable metals or minerals, thus requiring more resources to extract them profitably.
Depletion Time
The estimated time it will take to use up a resource at its current rate of consumption.
Mineral Reserves
Quantities of minerals that can be profitably extracted and processed with current technology.
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