There are times when invaluable technology that has been around for ages is suddenly and inexplicably lost to mankind. Some artisan knowledge like making glass that does not break (vitrium flexium), and even the legendary flying carpets have been lost. Some relegated to tales of fancy and myth. While others are kept alive by the surviving artifacts that serve as proof these advanced devices existed.
The original Damascus steel swords may have been made in the vicinity of Damascus, Syria, in the period from 900 AD to as late as 1750 AD. Damascus steel is a type of steel alloy that is both hard and flexible, a combination that made it ideal for the building of swords.
Metalsmiths in Sri Lanka perhaps as early as 300 BC developed a new technique known as wootz steel that produced a high-carbon steel of unusually high purity. Thousands of steel making sites were found in Samanalawewa area in Sri Lanka that made high carbon steel using Monsoon winds. These steel making furnaces were built facing western Monsoon winds and wind turbulance and suction was used to create heat in the furnace. Steel making sites in Sri Lanka have been dated to 300 BC using Carbon dating technology. Glass was added to a mixture of iron and charcoal and then heated. The technique propagated very slowly through the world, reaching modern-day.