Ores that are near the Earth's surface can be obtained by scraping away the soil, blasting the ore into small pieces, and removing it with heavy equipment and taking it to smelting plants. Ores that are located deep in the Earth must be mined from tunnels in deep rock.
Shaft mining or strip mining.
Through Mine Shafts, and Conveyor Belts that go far under.
ore deep beneath earth's surface is mined by drilling holes in the earth's crust so that mines can be built for excavation in which the ore is generally mined near but not to close to the base of a dormant volcano as not to activate the volcano.
OXYGEN
No, diamonds are found near lava. Diamonds being near redstone ore is just a myth
Gold
Ores near the surface will be quarried or opencast mined.
Ores near the surface will be quarried or opencast mined.
Ores.
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In the past, most ores were found at or near the surface of Earth's crust. As these ores have been largely depleted, excavations are occurring deeper within the ground.