International Journal Of Technology

It generally replaced bronze and made it potential to supply instruments which had been stronger, lighter and cheaper to make than bronze equivalents. The uncooked materials to make iron, corresponding to ore and limestone, are much more plentiful than copper and particularly tin ores. A late Bronze Age sword or dagger bladeMetallic copper occurs on the floor of weathered copper ore deposits and copper was used earlier Technology News than copper smelting was known. Copper smelting is believed to have originated when the technology of pottery kilns allowed sufficiently high temperatures. The focus of assorted elements similar to arsenic increase with depth in copper ore deposits and smelting of these ores yields arsenical bronze, which may be sufficiently work hardened to be appropriate for making tools.