As the famous Golden Gate Bridge in San Francisco turns 75 this year, a celebration was held to honor the bridge. Among the many events that were part of the celebration was a demonstration of heating and driving rivets. Rivets were the type of fastener used to assemble the parts of the Golden Gate Bridge, as well as most metal bridges built before 1970. Riveting is not used in bridge construction anymore except in historic bridge restoration work. The rivet demonstration was put on by Vern Mesler, who is a board member of the Historic Bridge Foundation. Click here to view a television news story that provides details of the rivet demonstration.