The concrete industry is about 150 years old if we measure time from the advent of portland cement- relatively young compared to some of man's other endeavors. While we currently busy ourselves in the development and advancement of this industry we often find ourselves in the process of losing some of the information about how this development has occurred. We can remember some of the outstanding landmarks of our technology but there is a good chance that some other have been forgotten beyond recall. The table found in the article is an attempt to set down a record in alphabetical order of some of the historical firsts involving concrete. Some highlights are: 1940- America, first absorptive form lining used to make a dense surface; 1932- US, first barrel-shell (multiple shell) roof made; 1885- Great Britain, calcium chloride as accelerator patented; 1890- Crystal Springs Dam, Colorado, first dam to be built of interlocking blocks; 1923- Imperial Hotel, Tokyo, first earthquake resistant concrete slab foundations proved adequate in earthquake; 1943- Italy, ferrocement experiments begun by Nervi; D-Day, 1974- Normandy landing, France, an artificial harbor of hollow half city block long piers floated into position; 1940- Friant Dam, California, chipped ice first used in concrete mix water for base lining; 1904- Chicago, journal devoted to concrete first begins publishing; 1950, Trinity University, San Antonio, Texas, first lift slab; 1949- US 22 on Jugtown Mountain, Hunterdon County, New Jersey, first median barrier with safety shape; 1818- Madison County, New York, Natural Cement manufactured from rock deposits; 1865- Inverness, Scotland, first world pavement; 1900- world, first use of concrete for railroad ties; 1923- Germany, first use of shell roof by architect Carl Zeiss; 1910- Arizona, first tilt-up (3 story hotel); 1936- St. Louis, first urban expressway; 1950, California- first vacuum lift tilt-up; and 1918- Chicago, first water-cement ratio study published.