The percentage of valuable minerals successfully recovered in ore
The percentage of valuable minerals successfully recovered in ore
An initial exploration and ground survey of mineral lands
The closing and rehabilitation of a mine back to its original or natural state
An ore or arsenic, Arsenic monosulfide.
A tetragonal mineral and ore of titanium, TiO2
A silvery white, hexagonal platinum group metal. Symbol, Ru
Water that drains from a flood plain, or higher structure into streams, rivers, or other channels
The red, gemstone variety of corundum Al2O3. Sapphires represent the blue variety of the same substance
A soft, silvery-white, metal. Symbol, Rb
A loose mass of rock fragments