LOL, Pete!! Here's a little telegraph history!!!
The final minutes of the ceremony were wired from Promontory to telegraph offices around the country where waiting crowds hung on every word. “Hats off” went out the telegraph dispatch as the final four spikes (two gold and two silver) were about to be driven. Then with Governor Stanford on the north side of the track and Durant of the Union on the south side at the ready to hammer in the final two gold spikes, the telegraph wires carried this message: “All ready now. The spike will soon be driven. The signal will be three dots for the commencement of the blows.”
The next moment, as the silver hammers knocked in the golden spikes, the three dots were transmitted across the nation followed by a simple message---“Done.” It was about 12:45 in the afternoon in Promontory when the two engines moved up and touched each other and the event was christened by pouring champagne on the last rail to much cheering from the crowd of workers. One of the famous photographs of this event shows the two chief engineers of railroads shaking each other’s hands.

Running that red block Charlie.