They thought this was their chance.

May 10, 1969, marked 100 years since the golden spike was hammered in at Promontory, Utah, signifying the completion of America’s first transcontinental railroad — a monumental engineering feat that linked together the nation's coasts.

A ceremony commemorating the anniversary drew a crowd of around 20,000. Among the attendees were Philip P. Choy, president of the San Francisco-based Chinese Historical Society of America, and Thomas W. Chinn, one of its founders.

Centennial officials had agreed to set aside five minutes of the ceremony for the society to pay homage to the Chinese workers who had helped build the railroad, but whose contributions had been largely glossed over in history. Choy, Chinn and the others gathered at Promontory that day had hoped this would be the moment when the more than 10,000 Chinese who labored for the Central Pacific Railroad finally got their due.

They didn’t.

“Who else but Americans could drill 10 tunnels in mountains 30 feet deep in snow?” then-Transportation Secretary John A. Volpe said in his speech, according to a May 12, 1969, San Francisco Chronicle article.