The depth of a borehole to where casing is entered
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Tag: <span>C</span>
The study or art of mapmaking
A process using activated carbon (wood or coconut shells) in ore pulp to absorbed precious metals and cyanide solution
Containing carbon
Originating from fossilized carbon and oil
A compound of carbon plus one or more metals or minerals
The common ore of the metal chromium
The separation of particles by density by spinning the mix of minerals quickly in a cyclone
A halogen element, Symbol, Cl
The era following the Mesozoic Era, known as the Era of Mammals