Mechanical engineering Landmark information including nomination criteria, guidelines, FAQ’s and forms.

US Space & Rocket Center, Huntsville, Ala.: largest rocket engines built at the time of the first US missions to the moon

Marshall Space Flight Center, Huntsville, Ala.: unique cooling system for the testing of aerospace engines

Sloss Furnace Museum, Birmingham, Ala.: last US pit-cast jib crane to operate in the casting of iron pipe

US Dept. of Agriculture, Agricultural Research Service, Auburn, Ala.: world's first full-size laboratory for tillage tools and traction equipment in all types of soils

Fairbanks, Alaska: one of the last mammoth gold dredges in the United States accessible to the public

Buenos Aires, Argentina: First ballpoint pens, utilized the concept of a quick-drying ink whose flow is controlled by gravity and a metal ball housed in a socket.

Childs-Irving Hydroelectric Project is an early 20th-century hydroelectric plant incorporating innovative technologies in Phoenix, AZ.

Magma Copper Co., Superior, Arizona: first air-conditioned mine in North America

Power House Museum (Sydney Technological Museum), Sydney, Australia: oldest surviving operable rotative steam engine by Boulton and Watt

Technical Museum, Vienna, Austria: direct predecessor of the modern automobile

Fresno District Fairgrounds, Fresno, Calif.: 19th-century example of the scraper whose design served as the basis for most giant earth-movers

Gillespie Fields Airport, El Cajon, Calif.: a first launch vehicle for the US space program

Jet Propulsion Laboratory, Pasedena, Calif.: the two most intelligent machines ever built by NASA space program

Hiller Aircraft Museum, San Carlos, Calif.: the first heavier-than-air human-carrying aircraft to achieve controlled piloted flight

IBM Building 12, San Jose, Calif.: world's first computer storage device with random access to large volumes of data

Carson, California: One of two surviving square-base linotypes

Pacific Gas and Electric Co., Sonoma Cty, Geysersville, Calif.: first commercial geothermal electricity-generating station in North America

Folsom Lake State Recreation Area, Folsom, Calif.: one of the first successful uses of hydroelectric power in the world, including the first successful long-distance transmission of power

FMC Corporate Technology Center, Santa Clara, Calif.: world's first continuous-stream automation of the cooking and cooling system for canned food

Iron Man Museum, Sunnyvale, Calif.: early 20th-century ironworks demonstrating the adaptability required for industrial survival

Sutter Creek, Calif.: one of the earliest US water-powered foundry-machine shops, including Knight impulse turbines

North Star Mining Museum, Grass Valley, Calif.: collection on the origins of the Pelton turbine and its principle of the "splitter" bucket

Chevron of Standard Oil, Newhall, Calif.: a replica of the first successful commercial oil refinery in the US West

Cargill Salt Company, Newark, Calif.: one of the US's oldest surviving examples of the wind-driven Archimedes screw-pump

Cable Car Barn and Powerhouse Museum, San Francisco, Calif.: one of the most complicated cable-car systems to run from a single station

California State Railroad Museum, Sacramento, Calif.: example of the final phase of US steam locomotive development in size and power

Anaheim, Calif.: first commercial Wenner-Gren monorail system

Roaring Camp & Big Trees, Felton, Calif.: early examples of small slow-speed 19-century geared locomotives

BART, San Francisco: most advanced automated urban rail transit system incorporating many innovations, marking a new generation of rail travel

Pasadena, Calif.: unique telescope mirror support and use of mercury flotation to reduce friction

Stanford University, Menlo Park, Calif.: unique electromechanical devices and systems in the longest accelerator in the world

Vallecitos Nuclear Center, Pleasanton, Calif.: world's first privately owned and operated nuclear power plant to deliver significant quantities of electricity to a public utility grid

Moffett Field, Calif.: R&D facility for the testing of supersonic aircraft and spacecraft

Holt Memorial Hall, Haggin Museum, Stockton, Calif.: earliest track-type gasoline-powered tractor, influencing designs worldwide

Fort Mason Center, San Francisco, Calif.: one of only two operating survivors of the US emergency-cargo fleet known as Liberty Ships

Peterborough, Ontario, Canada: world's highest operating hydraulic lift lock, operating on the balance principle

Port of Nanjing, Nanjing, China: first high-speed, dockside container-handling crane

Cog Rail Depot, Colorado Springs, Colo.: highest railway in the US and highest rack railway in the world

AAR Transportation Technical Center, Pueblo, Colo.: first and only railroad dynamometer to test track wheels using vertical and lateral loads as well as thermal braking at the wheel rim

Merrill Engineering Laboratories and Merril Axle and Wheel Service (shop), Englewood and Lakewood, Colo.: innovative method of wheel balancing (on the vehicle) adopted worldwide

New England Air Museum, Bradley Intl. Airport, Windsor Locks, Conn.: early example of propeller innovations, including variable-pitch control and feathering capability

Mark Twain House, Hartford, Conn.: first US typography machine to set, justify, and distribute foundry type from a common case using one operator

Pitney-Bowes Inc., Stamford, Conn.: early model of world's first commercial postage meter

Connecticut Light & Power, Rocky River Station, Hartford, Conn.: early example of the pumped-storage principle, at a power plant

Old Mystic, Conn.: a rare survivor of a once-commonplace seasonal rural industry

Stanadyne Auto Corp., Diesel Systems Division, Windsor, Conn.: early developmental models of distributor-type injection pump for controlling engine speed

Cos Cob, Conn.: pioneering venture in mainline railroad electrification

Jacobs Manufacturing Company, Bloomfield, Conn.: first practical mechanism for braking large trucks with engine compression as they descend long, steep grades at controlled speeds

Hagley Museum and Library, Wilmington, Delaware: largest U.S. maker of explosive black powder, a once-important and now-obsolete 19th-century technology

Rolls-Royce, Bristol, England: earliest surviving example of the prototype engine for vertical/short takeoff and landing (V/STOL) jets, namely Harriers and AV-8Bs; with IMechE

Friends of Dartmouth Museum Association, Devon, England: direct descendant of Thomas Newcomen's first atmospheric steam engine

Kew Bridge Steam Museum, Brentford, Middlesex, England: five notable 19th-century Cornish beam engines for municipal water supply

Tyne and Wear Museum, Newcastle-upon-Tyne, England: the world's first turbine-driven ship

Great Western Dock, Avon, Bristol, England: The world's first iron-hulled, screw-propelled ship to cross any ocean, leading to Britain's world leadership in maritime commerce

Pratt and Whitney, West Palm Beach, Fla.: first rocket engine to use high-energy liquid hydrogen as fuel

Kennedy Space Center, Fla.: largest rocket engines built at the time of the first US missions to the moon

Astronaut Hall of Fame, Titusville, Fla.: Apollo command module incorporating many innovations to allow safe transport of humans to moon and back

FMC Corporation, Citrus Machinery Divison, Lakeland, Fla.: early examples of machines that automated extraction of juices from fruit

National Park Service, Collier-Seminole State Park, near Naples, Fla.: last remaining dredge in the United States with unique propulsion system, designed for a wetlands environment

Useppa Island Historical Society, Fla.: example of early high-compression, cold-start, full-diesel engines developed for isolated, rural US areas before widespread electrification was available

City of Jacksonville Water Division, Jacksonville, Fla.: early 20th-century water pump driven by a Corliss steam engine

Prime Osborn Convention Center, Jacksonville, Fla.: early example of USRA passsenger locomotives representing the first US standardization program

Eglin Air Force Base, Fla.: test facility with unequalled capacity to simulate a wide range of climatic conditions from arctic cold to jungle moisture for full-scale equipment testing

University of Florida, Gainesville, Fla.: pioneering developments in solar-energy applications, with global accomplishments in training and innovation

Kennedy Space Center Visitor Center, Cape Canaveral, Fla.: two of the largest ground vehicles ever built, including automatic load-leveling systems

Museum of Man and Industry, Le Creusot, France: most powerful steam hammer in the world for many years

Paris, France. Most accurate to date drop-test device and wind tunnel to measure drag on falling objects of various shapes

Atlanta, Ga.: leader in transforming mechanical engineering education from a shop-based, vocational program to a professional one built on rigorous academic and analytical methods

Stirling Water-tube Boilers built in 1906 is the oldest existing steam generator in the US cotton mill and was made a ASME landmark in 1987.

Randall Brothers Inc., Atlanta, Ga.: example of a late 19th-century Corliss-type steam engine

Sankt Andreasberg, Niedarachsen, Germany: hoists representative of bygone practice, including a waterwheel for ore hoisting and a mechanism to hoist workers

Located aboard the paddle steamer Diesbar in Dresden, Germany. This particular steam engine, built by John Penn & Sons, was the first design incorporating oscillatory cylinders.

Dole Packaged Foods Company, Honolulu, Hawaii: example of automated peeling and slicing machine that led to commercial pineapple production

Idaho National Engineering Laboratory, Arco, Idaho: world's first nuclear power plant to demonstrate the breeder concept

Graue Mill and Museum, Oak Brook, Ill.: one of a few survivors of typical US mill machinery with wood as the principal material

Museum of Science & Industy, Chicago, Ill.: first US diesel-powered, stainless-steel streamlined train

CB&Q Aurora Shops, Aurora, Ill.: innovative railroad yard machine shop for first railroad linking Chicago and the Mississippi River

Fermi National Laboratories, Batavia, Ill.: largest cryogenic system ever built, providing benchmark for superconducting magnet designs

La Porte, Ind.: vital role in the mechanization of agricultural machines, including the Oil Pull tractor (1908) - with ASAgE

Hammond, Ind.: world's largest electric-power generator for nearly 25 years, achieving many design firsts

General Electric, Indianapolis, Ind.: first steam turbine electric-generation station

Floyd County Historical Museum, Charles City, Iowa: earliest known internal-combustion-engined agricultural tractor in the United States

Tokyo, Japan: the world's first high-speed railway, which operated at about 210 km/h (130-160 mph)

West Mineral, Kansas: one of the world's largest power shovels

New Orleans Sewerage and Water Board, New Orleans: the most advanced low-lift drainage pump in use in the early 20th century, later used worldwide

Regional Transit Authority of New Orleans, La.: the oldest surviving interurban-urban passenger rail transport system in the United States

Patten Lumberman's Museum, Patten, Maine: first practical example of crawler-tread vehicles now used in agricultural, construction, and military equipment

Crown Cork & Seal Co., Baltimore: one of two surviving automated machines that founded the bottling industry for beverages

Furnace Town Foundation, Snow Hill, Md.: earliest surviving hot-blast furnace in the United States

Old Lock Pump House, Chesapeake City, Md.: 19th-century steam pumps at the (former) summit of the ship canal

Mt. Clare Station, Baltimore, Md.: first US railroad in public service

B & O Railroad Museum, Baltimore, Md.: first USRA freight locomotive built, representing the first standardized family of US locomotives

US Army Test & Evaluation Command, Aberdeen, Md.: world's first large-scale, fully instrumented ballistic range for producing data on aerodynamics

David Taylor Model Basin (1939), US Navy, Bethesda: among the world's largest test facilities for the development of ship design.

Weymouth, Mass.: power-generation station with one of the world's only high-pressure topping turbines, which set new records in the late 1920s.

Springfield Armory National Historic Site, Springfield, Mass.: the first US armory noted for machinery for mass production of small arms, including the Blanchard lathe

Worcester, Mass.: one of the world's largest fabrication tools, influencing aviation and aerospace technology

Lowell National Historical Park, Lowell, Mass.: early major US water-power system and the first Francis inward-flow water turbine placed in service and oldest in existence

Holyoke Heritage State Park, Holyoke, Mass.: major 19th-century US industrial center for paper and textile industries, known for its machine shops and water-power system

National Park Service, Saugus National Historic Site, Saugus: replica of the first commercial ironworks in North America

Chestnut Hill Pumping Station, Boston, Mass.: unusual triple-expansion, three-crank "rocker" engine, driving high-capacity, high-speed pumps

Holden, Mass.: early 20th-century test facility for current meters, aircraft propellers, ships' logs, pitot tubes, and mine-sweeping paravanes

Nantucket History Association, Nantucket, Mass.: oldest operating smock-type windmill in the United States.

Henry Ford Museum, Dearborn, Mich.: first practical US helicopter, pioneering the single-main-rotor concept

Kalamazoo, Michigan: First functional wing-folding mechanism, enabling aircraft to take up less space on ships.

Henry Ford Museum, Dearborn, Mich.: sole surviving engine-generator set marking the beginning of large-scale electric power generation in the United States

Henry Ford Museum, Dearborn, Mich.: one of six dynamos from Edison's Pearl Street Station, the prototype for US central-station power generation.

Saulte Sainte Marie, Mich.: early, extremely large-scale, low-head hydropower plant using many small turbines

Detroit Edison Company, Detroit, Mich.: early example of typical US district heating plant

Brighton, Mich.: private collection that represents many of the advances in mechanical refrigeration for US residential and commerial use from the late 19th century up to 1960

Henry Ford Museum, Dearborn, Mich.: earliest example of the machine that automated light-bulb manufacture

Quincy Mine Hoist Association, Inc., Hancock, Mich.: world's largest mine hoist

Scottville, Mich.: early example of the successful conversion of steam engines to internal-combustion engines

Trenton, Michigan: vessel that introduced the basic oxygen process to the United States

Menominee Range Historical Foundation, Iron Mountain, Mich.: late 19th-century steeple compound-condensing engine and one of the largest at the time

Ford Motor Company introduced its new Model T on October 1, 1908, even an inveterate optimist like Henry Ford (1863-1947) could not predict the vast changes that his new vehicle would produce.

Lake Michigan Ferry Service, Ludington, Mich.: one of the last operating American steam lake boats with reciprocating engines and coal-fired boilers

Thermo King Corporation, Minneapolis, Minn.: earliest known refrigeration unit for trucks, having worldwide impact on food preservation

Biloxi, Mississippi. Revolutionary machine invented and built by a teenager from Houma, Louisiana, revolutionizing the seafood industry by peeling shrimp faster and more efficiently.

Vicksburg National Military Park, Vicksburg, Miss.: sole survivor of the fleet of river gunboats built by the Union during the US Civil War

Watkins Mill State Historic Site, Lawson, Mo.: the best preserved 19th-century woolen mill, in situ, in North America

National Museum of Transportation, St. Louis, Mo.: prototype of the first mass-produced diesel-electric locomotives used for US freight service

Kenefick Park, Nebraska, Omaha: two heavy-tonnage locomotives incorporating the best features of the day

Haarlemmermeer, The Netherlands: 19th-century steam pumping station that drained the Haarlemmermeer (lake)

Portsmouth Naval Shipyard, Portsmouth, N.H.: first US naval shipyard, achieving notable firsts in technology and producing many well-known US naval vessels

Marshfield Base Station, Mt. Washington: world's first cog railway

Experimental submarine that pioneered the teardrop-shaped hull, high-strength steel, and many other test concepts.

World's first practical sound recording machine in Edison Natl. Historic Site, West Orange, N.J.

A collection of operational steam engines and auxiliary equipment from the 19th century to the 1940s

Historic Industrial Complex, Trenton, N.J.: only remaining Roebling machine, largest wire-rope closing machine in 1893

Great Falls Visitor Center, Paterson, N.J.: first major US water power system and basis for integrating urban planning with industrial development

Greenwich Township, N.J.: early reaction, or Scotch, turbine, a type that later found widespread application

New Jersey Division of Parks and Forestry, Ringwood, N.J.: surviving 18th-century iron manufacturing center

Stevens Institute of Technology, Davidson Lab, Hoboken, N.J.: world's first model-test facility to conduct maneuverability and control experiments for surface ships, submersibles, and airships

Roberson Museum and Science Center, Binghamton, N.Y.: an early flight simulator representative of the first truly effective mechanical device used to simulate actual flight processes

Cradle of Aviation Museum, Garden City, Long Island, N.Y.: first piloted vehicle designed to operate solely in the vacuum of space

Amherst, N.Y.: first commercial human-blood heat exchanger for controlling hyperthermic temperatures during open-heart surgery

The world’s largest collection of 19th century kinematic mechanisms, designated a Landmark in 2004

Schenectady, N.Y.: first gas turbine used for electric utility power generation in the United States

General Electric, Schenectady, NY: Represented a significant step in power generation. The generator was a significant reduction in size and weight compared to other generators with similar output.

Pratt Institute Power Plant, Brooklyn, N.Y.: the oldest steam-generating plant of its kind in the Northeast United States

Jefferson County Historical Society, Watertown, N.Y.: largest collection of American turbine development

One of the world's largest movable stages, with innovative hydraulic equipment and controls, a forerunner of other stage designs as well as early aircraft carrier elevator systems.

Port Authority of New York & New Jersey, New York City, N.Y.: the world's first long underwater tunnel designed for motor vehicles, with innovative ventilating system

Erie Canal Museum, Lockport, N.Y.: site of the first US district heating steam-heating system

Westmoreland, N.Y.: for many years the oldest malleable iron company in continuous operation in the United States

Schenectady, N.Y.: first apparatus to consistently produce industrial diamonds, demonstrating fundamentals of producing and containing very high pressures

Harmony Mill No. 3, Cohoes, N.Y.: two of the oldest surviving water turbines, probably the largest and nearly the most powerful ever built in the United States for mechanical drive

Buffalo, N.Y.: one of the first machines to produce master rolls for player pianos by recording actual performances

Erie Canal Museum, Lockport, N.Y.: site of the first US integrated system to supply water for public safety

New York, N.Y.: the first fully electrically signaled railroad in the United States and the first practical subway in New York City

ASME, New York (on loan to Henry Ford Museum): the first comprehensive standard for the design, construction, inspection, and testing of boilers and pressure vessels, greatly influencing public safety

U.S. Merchant Marine Academy, Kingspoint, Long Island, N.Y.: mid-19th-century horizontal compound marine steam engine with return connecting rod

Murphy, N.C.: first integrated pump-turbine to be installed in a US power plant and also the largest and most powerful in the mid-20th century

Duke Power Company-Winston-Salem, Winston-Salem, N.C.: typical 19th-century small-scale, low-head run-of-the-river hydroelectric plant

Reed Gold Mine State Historic Site, Midland, N.C.: typical late 19th-century western-US stamp mill

Knox County Historical Society, Mount Vernon, Ohio: among the oldest surviving agricultural steam engines, from 1860 to 1883, showing the conversion to mechanized farming

Wright Patterson AFB, Dayton, Ohio: An early example of the "modern" wind tunnel for aircraft-model testing

Dayton History Carillon Park, Dayton, Ohio: the first practical airplane

Battelle Memorial Institute, Columbus, Ohio: early models of revolutionary dry-copying process

American Electric Power, Columbus, Ohio: the world's first commercial supercritical steam-electric generating unit

Aluminum Company of America, Forging Division, Cleveland, Ohio: one of the world's largest fabrication tools, dominant in aircraft and aerospace development

Toledo, Ohio: world's first automated bottling machine that introduced cheap and plentiful supply of glass containers, ending child labor in those plants

Battelle Memorial Institute, Columbus, Ohio: early examples of fabrication vessels using gas pressure and temperature to produce advanced alloy and ceramic products

Stock Equipment Company, Cleveland, Ohio: earliest known coal feeder, representing innovations that influenced nearly all industries using coal-fired boilers

Youngstown, Ohio: Representative of steam-powered rolling-mill-engine drives early in the transition to electric drive and typical of the largest work pieces produced by U.S. foundries and forges

Hancock Historical Museum, Findlay, Ohio: earliest surviving example of the first successful traction ditching machine for laying agricultural drainage tiles

Whiskey Island, Cleveland, Ohio: the largest and oldest surviving example of a highly efficient materials-handling machine unique to the Great Lakes that revolutionized ore handling

Mount Vernon, Ohio: Provided efficient compression energy for natural gas, petrochemical, refinery, and power industries around the world.

NASA Glenn Research Center, Cleveland, Ohio: world's oldest and largest refrigerated icing wind tunnel, with unique heat exchanger and spray system

Monarch Marking Systems, Miamisburg, Ohio: early model of first successful price-marking, tag-attachment machine for US retail merchandising

Chrysler Motors, Toledo Jeep House, Toledo, Ohio: early four-wheel drive, multipurpose field vehicle representing an unusual combination of modern vehicle design

Cleveland, Ohio: the prototypical ore boat on the Great Lakes.

Ditch Witch Museum and Heritage Center, Perry, Oklahoma: first mechanized, compact service-line trencher

Evergreen Aviation Museum, McMinnville, Oregon: the largest wood-constructed and the largest wingspan airplane ever built

Originally called Equitable. Portland, Oregon: first large commercial building in the United States to pioneer the use of heat pumps for heating and cooling

Milton S. Hershey Medical Center, Hershey, Pa.: world's first implantable heart pump to receive widespread clinical use

Duquesne Light Company, Shippingport, Pa.: first US commercial central electric-generating station to use nuclear energy

Eddystone, Pa.: the second U.S. (earliest extant) supercritical steam-electric generating unit, pioneering significant increases in steam pressure, steam temperature, and unit size

Metropolitan Edison Power Co., Reading, Pa.: one of the first three Kaplan-type hydraulic turbines in the United States

Philadelphia, Pennsylvania: First US system of standardized screw threads.

Coolspsring, Pa.: impressive variety of internal combustion engines, built primarily between 1890 and 1920 and consisting mainly of stationary engines used in industrial applications

Pennsylvania State University, State College, Pa.: unique experimental facility for hydrodynamic research and testing

Pa. Historical & Museum Commission, Titusville, Pa.: first practical oil recovery system using salt-well drilling techniques and modern pipe-driving methods, marks beginning of US petroleum industry

Pa. Historical & Museum Commission, Cornwall, Pa.: typical 19th-century US charcoal-fueled blast furnace, fully intact

Pennsylvania Power & Light Co., Holtwood, Pa.: first and still-operating Kingsbury thrust bearing in hydroelectric service, later used worldwide for all types of large machinery

Interpretive Center, Philadelphia Water Department, Philadelphia, Pa.: the first large-scale application of steam pumping, later water power, to public water supply

Erie City Water Authority, Erie, Pa.: typical US municipal steam water-pumping engine of the late 19th century and early 20th century

York (Pa.) Water Company: Corliss-driven pump, typical of early 20th-century US practice

Port Auth. of Allegheny County, Pittsburgh, Pa.: first US passenger incline

Port Authority of Allegheny County, Pittsburgh, Pa.: the second US passenger incline

Railroad Museum of Pennsylvannia, Strasburg, Pa.: locomotive prototype for use on electrified lines in eastern US, also exceptional for its flexible suspension system

Cambria County Transit Authority, Johnstown, Pa.: one of the world's steepest vehicular inclines, typical of several built in 19th century in Western Pennsylvania

Independence Seaport Museum, Philadelphia, Pa.: two of the first vertical triple-expansion marine engines

Conservation Trust of Puerto Rico, San Jaun, Puerto Rico: typical beam steam engine of the mid-19th century, directly connected to sugar crushing rolls

Puerto Rico Conservation Trust, Ponce, Puerto Rico: only known example of a Barker hydraulic turbine, the earliest practical reaction type

The largest radiotelescope ever constructed has been in the forefront of scientific research since its installation in 1963. Landmark since 2001

East Greenwich, R.I.: collection of Rhode Island steam engines, including one of the few surviving built at the Corliss Works

Pawtucket, R.I.: Early 19th-century textile mill and machine shop

Tekniska Museet, Stockholm, Sweden: experimental model of the industrial air preheater, now used worldwide

Brown-Boveri, Neuchatel, Switzerland: world's first successful electricity-generating gas turbine to go into commercial operation. Re-designated in Birr, Switzerland, June 4 2007. Now owned by ALSTOM

Pilatus Bahnen, Mount Pilatus, Switzerland: the world's steepest cog railway

Lake Lucerne Navigation Company, Lucerne, Switzerland: the oldest operating vessel with a diagonal, compound steam engine, with disc valve gear

This Noria in Hama became an ASME Landmark on December 22, 2006. It is one of the oldest and largest existing whaterwheels, supplying water to the city's inhabitants for almost 700 years

Arnold Air Force Base, Tenn.: world's first large-scale testing facility for jet and rocket engines in simulated high-speed flight conditions

ABB Combustion Engineering, Inc., Chattanooga, Tenn.: first fusion-welded boiler drum, tests on which led to widespread acceptance in industry

Lookout Mountain Incline Railway, Lookout Mountain, Tenn.: 19th-century 3-rail incline

Texas Instruments, Plano, Texas: The Digital Micromirror Device (DMD) manipulates light digitally through the mechanical action of up to two million movable, individually controllable micromirrors

Lyndon B. Johnson Space Center, Clear Lake City, Texas: largest rocket engines at the time of the first US lunar missions

Texas Instruments, Dallas, Texas: world's first practical production machine for the assembly of integrated circuits, making possible their economical production

Houston Lighting and Power Co., Houston, Texas: first fully outdoor turbine-generator to be placed in commercial operation

Milam GP Limited, San Antonio, Texas: first US air-conditioned high-rise office building

Southwest Research Institute, San Antonio, Texas: Mechanical test instrument used to measure and characterize the dynamic response of materials at high strain rates

Cameron World Headquarters, Houston, Texas: first ram-type blowout preventer, which sealed the wellhead and controlled pressure during drilling and oil production operations

The Woodlands, Texas. Revolutionary drilling technology, broke ground to a new era of oil and gas production

Age of Steam Railroad Museum, Dallas, Texas: earliest known survivor of the fleet of heavyweight, all-steel sleepers built by the Pullman Company

Texas State Railroad Historical Park, Palestine, Texas: sole surviving example of the earliest form of "superpower" steam locomotives

Dallas, Texas: first computer system to be applied to the design of natural-gas pipeline systems

Longview, TX. ASME Landmark since 2004, the Mountain Mover Earthmoving Scraper helped lead to better access to farming land and road, highway and airport building for decades after its introduction

Peerless Manufacturing R & D Facility, Dallas, Texas: early safety device for introducing odor into natural-gas lines to make leaks apparent

Newell Industries, San Antonio, Texas: second and earliest surviving automobile shredder for recycling scrap metal

Burton, Texas: earliest known survivor of an integrated cotton ginning system widely used in the southern United States

San Jancinto Battleground State Park, Houston, Texas: last reciprocating marine engines installed in a naval ship

Built to lift a sunk Soviet submarine from the bottom of the Pacific. Designated as an ASME Historic Mechanical Engineering Landmark in Houston, Texas on July 20, 2006

City of Victoria, Parks and Recreation Dept., Victoria, Texas: mid-19th-century wind-powered gristmill of Dutch turret-mill style

Ogden Union Station Museum, Ogden, Utah: collection of sporting and military firearms designed by John Moses Browning

Miners Plaza in historic Old Park City, Park City, Utah: first successful mining device to replace human labor in removing the rubble from underground hard-rock blasting

Windsor, Vt.: largest US collection of significant machine tools

American Precision Museum, Windsor, Vt.: site of first machine shop to achieve interchangeable manufacture on a practical scale

Shot Tower & New River Trail State Park, Austinville, Va.: one of the few surviving shot towers for making spherical lead shot

Fairfax County Park Authority, Fairfax, Va.: good example of a typical early 19th-century (US) water-powered, Evans-type flour mill, restored into operating condition

Virginia Museum of Transportation, Roanoke, Va.: last survivor of US coal-fired passenger locomotives, considered among the most advanced of any 4-8-4

United States Marine Corps Air-Ground Museum, Quantico, Va.: prototype of all tracked ship-to-shore landing vehicles

US Navy James River Reserve Fleet, Ft. Eustis, Va.: world's first nuclear-powered cargo-passenger ship

Steven F. Udvar-Hazy Center, Dulles Aiport, Washington, D.C.: prototype of the Boeing 707 and most jet transport systems, establishing economic feasibility of commercial air travel

Seattle, Washington: steam plant with early Curtis turbines, marking the beginning of the end of the reciprocating steam engine as the central station prime mover

Richland, Wash.: first US plutonium production reactor placed in operation

Milwaukee Repertory Theater, Wis.: pilot plant for US development of pulverized-coal firing in power-plant boilers

Wisconsin Electric Power Company, Milwaukee, Wis.: world's most thermally efficient steam plant for many years

City of Appleton, Wisconsin: first Edison hydroelectric central station

The first multi-zone temperature control system that could be economically manufactured, installed and maintained.

Milwaukee, Wis.: prototype of the automated factory

Mid-Continent Railway Historical Society, North Freedom, Wis.: oldest-surviving Electro-motive Company (EMC) gas-electric rail motorcar and the oldest with Lemp control

Waukesha Engine Division, Wis.: pioneer variable-compression laboratory engine for testing fuels

Metropolitan Sewerage System District, Milwaukee, Wis.: one of the earliest water-pollution control systems, reducing the concentration of pollutants in an urban stream

OMC Milwaukee, Milwaukee, Wis.: early model of outboard motor for small boats, now standard