This reenactment of the completion of America’s transcontinental railroad on May 10, 1869, at Promontory Summit, Utah, has been held since 1952. Reproductions of the Central Pacific’s “Jupiter” and Union Pacific’s “119” meet at the site of the ceremony. Then, the Golden Spike and three other spikes are tapped into a special railroad tie; at 12:47 PM, an ordinary iron “last spike” is driven into the last tie, and the message “D-O-N-E” is sent by ham radio to the California State Railway Museum in Sacramento. Discuss
Source: The Free Dictionary