The history of pure iron rivets can be traced back to the early 19th century, when metal rivets began to be widely used in large-scale projects such as railway laying and shipbuilding. With the advancement of the Industrial Revolution, rivets have been used more and more widely in industry, becoming an important symbol of progress in connection technology.
Discovery history
In the 1980s, an American archaeological team discovered a stone pillar inlaid with iron rivets in a cave in Honduras, Central America. After testing, it was found that this rivet is 7 million years old. Although it has a regular shape and can still be used, its origin and manufacturer remain a mystery.
Archaeological discovery
This 7 million-year-old iron rivet is made of more than 80% iron, has a regular shape and is well preserved. Experts believe that this may be a relic made by prehistoric humans, further proving the existence of prehistoric civilization.
