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2001

NAIC/Arecibo Radiotelescope
Society: IEEEMain Category: ElectricalSub Category: SignalsEra: 1960-1969DateCreated: 1963Arecibo ObservatoryAreciboState: PRZip: 00612Country: USAWebsite: http://www.asme.org/about-asme/history/landmarks/topics-m-z/research-and-development/-216-arecibo-radiotelescope-%281963%29Creator: Gordon, William , Doundoulakis, Helias

The Arecibo Observatory has the largest radio telescope ever constructed. Maintaining the greatest electromagnetic wave gathering capacity of any telescope, it has been an essential tool in modern astronomy, ionosphere and planetary studies. Several feats of mechanical engineering went into the construction of this observatory, most notable of which is a drive system which allows all active parts of the antenna to be kept focused with millimeter precision regardless of environmental factors—such as thermal expansion.

YearAdded:
2001
Image Caption: NAIC/Arecibo RadiotelescopeEra_date_from: 1963
Galveston Seawall and Grade Raising
Society: ASCEMain Category: CivilSub Category: Water Supply & ControlEra: 1910-1919DateCreated: 1911GalvestonState: TXCountry: USAWebsite: http://www.asce.org/project/galveston-seawall-and-grade-raising-project/Creator: Noble, Alfred, J.M. O'Rourke and Company

Galveston Island is a barrier island located two miles off the Texas coast. The island is about 3 miles wide at its widest and about 28 miles long. The Galveston Seawall extends over 10 miles along Galveston's oceanfront, protecting life and property against hurricanes and tropical storms. 

YearAdded:
2001
Image Credit: Courtesy Flickr/Ed Schipul (CC BY-SA 2.0)Image Caption: Galveston Seawall and Grade RaisingEra_date_from: 1911
Society: ASMEMain Category: MechanicalSub Category: ICEra: 1890-1899DateCreated: 1890-1929179 RoadCoolspringState: PAZip: 15730Country: USAWebsite: http://www.asme.org/about-asme/history/landmarks/topics-m-z/mechanical-power-production-ic/-215-coolspring-power-museum-%281890-1929%29Creator: Wilcox, John , Harvey, Paul

Early internal combustion engines produced only a few horsepower and were unable to replace steam engines in most applications until about 1890. By then, they were powerful enough for most portable or remote locations and many small manufactures. By 1900, they were replacing reciprocating steam engines for electric generation, and by 1915, they were being considered for all but the largest installations where steam turbines have dominated to date.

YearAdded:
2001
Image Credit: Courtesy Flickr/sirbeagle (CC BY 2.0)Image Caption: Coolspring Power MuseumEra_date_from: 1890
Society: ASMEMain Category: MechanicalSub Category: ManufacturingEra: 1800-1829DateCreated: ca. 181010017 Colvin Run RoadGreat FallsState: VACountry: USAWebsite: http://www.asme.org/about-asme/history/landmarks/topics-m-z/manufacturing---2/-214-colvin-run-mill-%28ca--1810%29Creator: Unknown
Colvin Run Mill is an early 19th century operating gristmill, closely modeled on the principles developed by Oliver Evans (1755-1819). Powered by a waterwheel, the restored mill was probably built on or after 1811 on the site of an older mill. Originally, the site was the property of George Washington, who identified it as ideal for a mill site. The first verifiable documentation of gristmill business was made by Philip Carter, who purchased a 90-acre property about 1811 from William Sheppard, who probably built the original mill based on Evans' design.
YearAdded:
2001
Image Credit: Courtesy Flickr/Fairfax County Chamber of Commerce (CC BY 2.0)Image Caption: Colvin Run MillEra_date_from: ca. 1810
Bunker Hill Covered Bridge
Society: ASCEMain Category: CivilSub Category: BridgesEra: 1890-1899DateCreated: 1894Lyle CreekCatawba CountyState: NCCountry: USAWebsite: http://www.asce.org/Project/Bunker-Hill-Covered-Bridge/Creator: Ramsour, Andy, Haupt, Herman

In 1894, Catawba County, North Carolina commissioners asked local landowners to build and maintain an 85-foot-long bridge across Lyles Creek. The community hired Andy L. Ramsour, who served as keeper of the Horseford covered bridge over the Catawba River in Hickory, North Carolina.

YearAdded:
2001
Image Credit: Public Domain (National Park Service)Image Caption: Bunker Hill Covered BridgeEra_date_from: 1894
Baltimore & Ohio Roundhouse & Shop Complex
Society: ASCEMain Category: CivilSub Category: BuildingsEra: 1840-1849DateCreated: between 1842 and the229 E Martin StreetMartinsburgState: WVZip: 25401Country: USAWebsite: http://www.asce.org/project/baltimore---ohio-railroad-roundhouse---shop-complex/Creator: Fink, Albert, Latrobe, Benjamin

"The roundhouse is an amazing survivor of an important era in American engineering and architectural history. Eric DeLony, chief of the National Park Service's Historic American Engineering Record, has called it 'the most important surviving cast-iron framed building in North America.'"   
From: The Baltimore and Ohio Railroad Martinsburg Shop Complex: Historic Structure Report. By John P. Hankey, August, 2000.

YearAdded:
2001
Image Credit: Courtesy Flickr/Roger Wollstadt (CC BY-SA 2.0)Image Caption: The Baltimore & Ohio (B&O) Roundhouse, built 1851.Era_date_from: between 1842 and the
Radio City Music Hall Hydraulically Actuated Stage
Society: ASMEMain Category: MechanicalEra: 1930sDateCreated: 1932Radio City Music HallNew YorkState: NYZip: 10020Country: USAWebsite: http://www.asme.org/about-asme/history/landmarks/topics-a-l/entertainment/-217-radio-city-music-hall-hydraulically-actuatedCreator: Clark, Peter

The precision "choreographed" staging of Radio City Music Hall offers size and versatility, unlike any other. Built in 1932 by Peter Clark, its innovative elevator system is a forerunner of other stage designs (including the Metropolitan Opera House) as well as aircraft carrier systems built in World War II. These elevators can handle people, animals, props and scenery at variable speeds, delivering them to the stage or above and also dropping out of sight in front to reappear again in the back, just as effectively.

YearAdded:
2001
Image Credit: Public Domain (Author's Choice)Image Caption: Underneath the Orchestra Lift at the Radio City Music Hall
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