20,000 inhabitants located beyond the end of the Florida peninsula. He became particularly interested in linking Key West to the mainland after the construction of the Panama Canal was announced by the United States in 1905. As the closest deep-water port in the United States to the canal, Key West was positioned to take advantage of significant new trade with the west that would be enabled by the opening of the canalthis, in addition to the city's existing involvement with Cuban and Latin American trade. Key West was a major coaling station for ship traffic between South America and New York. Flagler thought it would be profitable for coal to be brought by railroad to Key West for coaling those ships. Though, by the time the extension was finished, the range of ships had been extended to such a degree that they no longer stopped in Key West for coal. The construction of the Overseas Railroad required many engineering innovations as well as vast amounts of labor and monetary resources. Many considered the Key West extension a folly as it was one of the most daring infrastructure ever built exclusively with private funds. At one time during construction, four thousand men were employed. During the seven years of construction, three hurricanes threatened to halt the project. This included the 1906 Florida Keys hurricane, which killed 135 of Flagler's workers. The Key West extension cost of $50 million and the lives of hundreds of workmen. Workers toiled under conditions sufficiently cruel and harsh that the US Justice Department prosecuted the FECR under a federal slave-kidnapping law. Journalists also chronicled conditions of debt peonage wherein immigrant labor was threatened with prohibitive transportation fees to leave Key West after seeing the unsafe and disease-ridden conditions, essentially forcing them to stay. Despite the hardships, the final link of the Florida East Coast Railway to Trumbo Point in Key West was completed in 1912. The first train, a construction engineers' train, arrived in Key West on January 21, 1912. The next day, which is considered the first day of service on the new route, a proud Henry Flagler rode the first passenger train into Key West, marking the completion of the railroad's oversea connection to Key West and the linkage by railway of the entire east coast of Florida. The completed extension was widely known as the "Eighth Wonder of the World". Upon his arrival