Extracted Ore is crushed smelted, a chemical process usually requiring huge quantities of heat at very high temperature, to extract the metal from the mineral that was the ore. Eventually each specific ore deposit is exhausted and the mine falls into disuse.
Ferrous metals production process is a complex process. The ore is crushed and the metalcatalyst are combined. And then are heated and melted the metal and the mold is formed.
iron ore iron ore
Your question can be answered by defining the terms. Ore is a solid material from which a metal or mineral can be extracted, while diamond is classified as a mineral formed in rocks. No process except cutting away excess diamond can change a mined diamond, in this case into a gemstone. Diamonds are erupted to the earth's surface from deep within its mantle where they are formed. Ore exists in veins, more or less, laid there by the process of eons' worth of deposits on the earth's surface.
Dig a large pit over an underground ore body, dig out the ore body, process the material from the ore body to extract the desired material (e.g. coal, metal, oil sand/shale). When done the pits used to be abandoned, now in the U.S. the EPA requires remediation.
Smelting
Ore was refined, in a crude and primitive process, during the Iron Age.
Smelting
Smelting
There are various methods depending on which ore it is. Most start with physically crushing to ore into small pieces. The ore is then exposed to a combination of heat, chemicals and physical processes that result in a liquid molten metal that is poured into ingots.
froth floatation process
1 iron ore and 2 coal ore, use on furnace and makes a steel bar.
To separate copper from its ore, the process is called smelting. The copper and ore are heated and the copper turns to liquid which is then poured from the smelter.
bauxite
Smelting
smelting
The process is called - smelting