In order to make it easier to describe elements and molecules, chemical formulas are used. For example, H represents one atom of hydrogen and O represents one atom of oxygen. If we want to represent two atoms of hydrogen, instead of writing H H, we write H2.
This car is named for Promontory Summit, Utah, just north of Great Salt Lake and the site selected for the joining of the Union Pacific and Central Pacific Railroads. Completion of the railroadâthe greatest engineering feat of the 19th centuryâculminated in a celebration there on May 10, 1869. Promontory Point, often erroneously referred to as the location for the ceremony, juts out into the lake itself. It was the location of a saltworks for many years.
Actual construction took just four years to build the lines over rivers, across plains, through mountains. When completed, it allowed coast-to-coast travel in six days rather than six months. But once the rail lines were linked, it didn't take long for Promontory Point to fade from prominence.Six months after the Union Pacific and Central Pacific were joined, the Promontory site became just a whistle stop along the way. In 1903 engine 119 was sold for scrap.The Jupiter met the same fate three years later.he companies were in a race. For good reason. The project was subsidized by the federal government to the tune of between $16,000 to $48,000, plus 10 land sections (160 acres) for each mile of track laid. It was marked by a simple concrete pylon holding a brass plaque.