Engineering Innovations
Displaying 321 - 340 of 675
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Hanford B Reactor Sunnyside, WA |
The Hanford B-Reactor was the first plutonium production reactor to be placed in operation. Its success made possible the subsequent development of atomic energy. The research… |
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Hanford B Reactor Richland, WA |
In the first nine months of operation, the B reactor produced fissionable plutonium for the world's first atomic bomb (the Trinity test on July 16, 1945), and for the atomic bomb… |
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Harris-Corliss Steam Engine Atlanta, GA |
This 350-horsepower Corliss type steam engine is an example of a typical late nineteenth century steam engine. The essential feature of Corliss type engines is the valves that… |
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Hart Parr Tractor Charles City, IA |
This landmark artifact represents the first commercially successful farm tractor in the world powered by an internal-combustion engine. It was invented and built by Charles W.… |
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Havemeyer Hall New York, NY |
Havemeyer Hall was built between 1896 and 1898 under the leadership of Charles Frederick Chandler. It provided research and teaching facilities for faculty and students… |
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High Bridge Wilmore, KY |
In the 1850s, the Lexington and Danville Railroad began building a suspension bridge over the Kentucky River. The bridge was designed by John A Roebling. Due to unforeseen… |
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Hiwassee Dam Unit 2 Reversible Pump-Turbine 1 Murphy, NC |
The integration of pump and turbine was the first of many to be installed in power-plant systems in the United States. It was the largest and most powerful in the world. As a "… |
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Hobby 1940 Air Terminal Houston, TX |
The 1940 Air Terminal is a beautiful and rare example of classic art deco airport architecture from the golden age of flight. Designed by noted architect Joseph Finger, the… |
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Hohokam Canal System Phoenix, AZ |
Developed by the Hohokam, a prehistoric group of Native Americans, the canal system in the Salt River Valley serviced more than 100,000 acres of mostly arid desert country in what… |
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Holland Tunnel Jersey City, NJ |
The 1.6-mile Holland Tunnel was the first underwater vehicular crossing of the Hudson River and the first tunnel specifically designed for automobiles and trucks. It dramatically… |
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Holland Tunnel Ventilation System New York, NY |
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… |
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Holt Brothers Combine Stockton, CA |
The Sidehill Combine Developed By The Holt Brothers At Stockton, California In 1891, A Significant Milestone In Grain Harvesting And Agricultural Efficiency That Opened New Land… |
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Holt Caterpillar Tractor Stockton, CA |
The first practical demonstration of this tractor took place in a peat field on Roberts Island on November 24, 1904, and was patented and in production by December of 1907. The… |
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Holt Track-Type Tractor aStockton, CA |
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Holyoke Water Power System Holyoke, MA |
Known as the Paper City by 1877, this site was a major industrial center with extensive paper mills, textile mills, machine shops, and a water power system that had within a few… |
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Home and Birthplace of Alberto Santos-Dumont Sao Paolo, |
Born 20 July 1873 in the state of Sao Paolo, Alberto Santos Dumont moved to Paris in 1891 but never forgot his birthplace. He soon began experimenting with flying, and designed… |
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Honeysuckle Creek Tracking Station ACT, ACT |
Established between 1967, the Honeysuckle Creek Tracking Station, along with the Tidbinbilla and Orroral Valley sites, supported NASA’s Deep Space Network, Manned Space Flight… |
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Hoosac Tunnel North Adams, MA |
When first proposed in 1819, the Hoosac Tunnel seemed so logical. It would provide an efficient and direct route for the Boston and Albany Railroad, whose pathway meandered 20… |
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Hoover Dam Boulder City, AZ |
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… |
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Horseshoe Curve Altoona, PA |
One of the earliest and most impressive of America's great railroad engineering feats, the Horseshoe Curve was built as a means of overcoming a straight-line grade over the… |
