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1984

Tower Silo
Society: ASABE Main Category: Agricultural & Biological Sub Category: Storage Era: 1870-1879 DateCreated: 1873 Lyle C. Thomas Park Spring Grove State: IL Zip: 60081 Country: USA Website: https://www.asabe.org/awards-landmarks/asabe-historic-landmarks/tower-silo-18.aspx Creator: Hatch, Fred L.

First Tower Silo Designated A Historic Landmark Of  Agricultural Engineering. The First Tower Silo In America Was Erected Near This Site On The Hatch Farm, One Half-Mile East Of Spring Grove, Illinois. Fred L. Hatch And His Father, Lewis Hatch, Erected This Silo In October 1873, After Fred Graduated From The Illinois Industrial University. (Now The University Of Illinois). Textbooks On Agriculture Were Scarce, And Professor Willard F. Bliss Translated French And German Pamphlets On Silage Production Wherein The Entire Corn Plant Was Buried In Pits, And This Inspired Young Hatch.

YearAdded:
1984
Image Credit: Courtesy Flickr/Doc Searls (CC BY 2.0) Image Caption: A modern tower silo Era_date_from:
St. Charles Avenue Streetcar Line
Society: ASME Main Category: Mechanical Sub Category: Rail Transportation Era: 1830-1839 DateCreated: 1835 2817 Canal Street
New Orleans State: LA Zip: Country: USA Website: http://www.asme.org/about-asme/history/landmarks/topics-m-z/rail-transportation---2/-101-st--charles-avenue-streetcar-line-%281835%29, https://www.asme.org/getmedia/40ef6e7c-697d-4f77-8daa-059a37f698b3/101-St-Charles-Avenue-Streetcar-Line-1835.aspx Creator: Perley A. Thomas Car Company

The St. Charles Avenue Streetcar Line is the oldest surviving interurban-urban passenger rail transportation system in the United States. Originally incorporated as the New Orleans Carrollton Rail Road in 1833, service began in 1835. A variety of motive power had been used including horses, mules, overhead cable, steam engines, and ammonia engines before electrification in 1893. The 900-series cars presently in service were designed and built by the Perley A. Thomas Car Company of High Point, North Carolina, in 1923 to 1924.

YearAdded:
1984
Image Credit: Original Image: Courtesy Wikipedia/Falkue (CC BY-SA 3.0) Image Caption: St. Charles Avenue Streetcar Line Era_date_from: 1835
SS Jeremiah O'Brien
Society: ASME Main Category: Mechanical Sub Category: Water Transportation Era: 1940-1949 DateCreated: 1942 Pier 45 in Fishermans Wharf San Francisco State: CA Zip: Country: USA Website: http://www.asme.org/about-asme/history/landmarks/topics-m-z/water-transportation/-98-ss-jeremiah-o-brien-%281943%29, https://www.asme.org/getmedia/f558ea74-61d6-4650-92f3-d980c237c373/98-SS-Jeremiah-O-Brien-1943.aspx Creator: New England Shipbuilding Corporation

The SS Jeremiah O'Brien, an emergency cargo vessel of the type EC2-S-C1 better known as Liberty Ships, is one of two operative survivors of 2,751 ships, the largest fleet of single class ever built. The other is the SS John W. Brown, now in Baltimore (not operative at the time of the landmark designation). Between March 1941 and November 1945, eighteen US shipyards produced 2,751 ships. The design stressed minimum cost, rapidity of construction, and simplicity of operation. The original design and configuration have not been altered.

YearAdded:
1984
Image Credit: Courtesy Wikipedia/Sanfranman59 (CC BY-SA 3.0) Image Caption: SS Jeremiah O'Brien 1 Era_date_from: 1942
SS Great Britain
Society: ASME Main Category: Mechanical Sub Category: Water Transportation Era: 1840-1849 DateCreated: 1843 Great Western Dockyard Bristol State: Zip: BS1 6TY Country: UK Website: http://www.asme.org/about-asme/history/landmarks/topics-m-z/water-transportation/-97-ss-great-britain-%281843%29 Creator: Patterson, William

The innovative SS Great Britain, launched in 1843, was the first iron-hulled, screw-propelled ship to cross any ocean and led mercantile history into British domination in the late nineteenth century. Standard practice of naval and merchant ship construction derived from this ship. The compartmented hull, unprecedented 1,500-horsepower engine with chain drive, and many other seminal features were the designs of Isambard Kingdom Brunel. New design features included a balanced rudder, an electric log, a double bottom, and water-tight bulkheads.

YearAdded:
1984
Image Credit: Courtesy Flickr/Terry Whalebone (CC BY 2.0) Image Caption: SS Great Britain Era_date_from: 1843
Stanford Linear Accelerator Center (SLAC)
Society: IEEE Main Category: Electrical Sub Category: Nuclear and Plasma Sciences Era: 1960-1969 DateCreated: 1962 Stanford Linear Accelerator Portola Valley State: CA Zip: 94028 Country: USA Website: http://www.ieeeghn.org/wiki/index.php/Milestones:Stanford_Linear_Accelerator_Center,_1962 Creator: Stanford University

The basic research tool at SLAC is an intense beam of electrons that have been accelerated by an electric field equivalent to 30 billion volts, making this the most powerful electron beam in the world.

The two-mile linear accelerator produces this field using high-power microwaves traveling through an evacuated waveguide. Electrons injected into one end of this pipe are continuously accelerated by this traveling field to very high energies.

YearAdded:
1984
Image Credit: Courtesy Wikipedia/Jvimal (CC BY 3.0) Image Caption: Stanford Linear Accelerator Center (SLAC) Era_date_from: 1962
Stanford Linear Accelerator Center
Society: ASME Main Category: Mechanical Sub Category: Research and Development Era: 1960-1969 DateCreated: 1962 Stanford Linear Accelerator Menlo Park State: CA Zip: 94028 Country: USA Website: http://www.asme.org/about-asme/history/landmarks/topics-m-z/research-and-development/-92-stanford-linear-accelerator-center-%281962%29, https://www.asme.org/getmedia/f8e54d6f-6e0d-4f7d-ad3a-ff357142f07b/92-Stanford-Linear-Accelerator-Center-1962.aspx Creator: Stanford University

The Stanford Linear Accelerator Center was renamed in 2009 to the SLAC National Accelerator Laboratory.

Notable for: unique electromechanical devices and systems in the longest accelerator in the world

YearAdded:
1984
Image Credit: Courtesy Flickr/Jeff Keyser (CC BY-SA 2.0) Image Caption: Stanford Linear Accelerator Center Era_date_from: 1962
Panama Canal
Society: ASCE Main Category: Civil Sub Category: Water Transportation Era: 1910-1919 DateCreated: 1914 Isthmus of State: Zip: Country: Panama Website: http://www.asce.org/Project/Panama-Canal/ Creator: Wallace, John , Stevens, John F.

The United States became interested in a water route through the Panamanian isthmus in the mid-1850s, but it was the French who first attempted to build the Panama Canal. Led by Ferdinand de Lesseps, builder of the Suez Canal in Egypt, the French began the project in 1876. Conditions were brutal: rampant yellow fever and malaria; massive landslides and flooding; sweltering heat; and construction equipment that was too light for the job.  

YearAdded:
1984
Image Credit: Courtesy Flickr/Naval Surface Warriors (CC BY-SA 2.0) Image Caption: Panama Canal Era_date_from: 1914
Hoover Dam
Society: ASCE Main Category: Civil Sub Category: Dams Era: 1930-1939 DateCreated: 1935 Colorado River Boulder City State: AZ Zip: 86443 Country: USA Website: http://www.asce.org/Project/Hoover-Dam/ Creator: Six Companies, Inc., Davis, Arthur

In 1918, the U.S. Reclamation Service's director and chief engineer Arthur P. Davis proposed a dam of unprecedented height to control the devastating floods on the Colorado River, generate hydroelectric power, and store the river's ample waters for irrigation and other uses.

YearAdded:
1984
Image Credit: Courtesy of Flickr/JoshBerglund19 (CC BY 2.0) Image Caption: Hoover Dam Era_date_from: 1935
Society: ASME Main Category: Mechanical Sub Category: Environmental Control Era: 1920-1929 DateCreated: 1920 Hudson River Greenway; Manhattan New York State: NY Zip: Country: USA Website: http://www.asme.org/about-asme/history/landmarks/topics-a-l/environmental-control/-93-holland-tunnel-ventilation-system-%281920%29 Creator: Freeman, Milton
The first long underwater tunnel in the world designed for motor vehicle use was built from 1920 to 1927. The 29.5-foot-diameter, 8,500-foot-long twin tubes of this tunnel were shield-driven by the pneumatic method through extremely difficult river-bottom conditions that were overcome by the ingenuity and determination of its engineers, Clifford M. Holland, Milton H. Freeman, and Ole Singstad. They were the largest in the United States when built.
YearAdded:
1984
Image Credit: Courtesy Flickr/Bill Benzon (CC BY-SA 2.0) Image Caption: Holland Tunnel Ventilation System Era_date_from: 1920
Golden Gate Bridge
Society: ASCE Main Category: Civil Sub Category: Bridges Era: 1930-1939 DateCreated: 1937 Golden Gate National Recreation Area Mill Valley State: CA Zip: 94941 Country: USA Website: http://www.asce.org/Project/Golden-Gate-Bridge/ Creator: Ellis, Charles , Strauss, Joseph

Put in service in 1937, this world-renowned bridge, conceived by Joseph Strauss and designed largely by Charles Ellis, was the longest single span (4,200 feet) in the world for a quarter century.

As with many civil engineering projects in their conceptual stages, naysayers scoffed at the Golden Gate Bridge. They said it would be technically unfeasible or too expensive to bridge the Golden Gate, a 1.7-mile-wide opening separating the Pacific Ocean from the San Francisco Bay. They said that the channel was too deep; the tides and winds too strong; the span too long.

YearAdded:
1984
Image Credit: Courtesy Flickr/Salim Virji (CC BY-SA 2.0) Image Caption: Golden Gate Bridge Era_date_from: 1937
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