A multimedia graphic explains how certain structural elements of the World Trade Center helped to delay its collapse when it was attacked on September 11, 2001, whereas other elements probably sped up the towers' fall.

Provides biographical information on Lewis Metzler Clement, the chief engineer for the Central Pacific Railroad, who both designed much of the route and supervised construction of the railroad.

This site from the Central Pacific Railroad provides an extensive and comprehensive article about surveying the route for the railroad, the problems with construction, and the men behind the idea of the railroad. Hyperlinks to additional...

A graphical timeline that showcases all the buildings in the world that, at one time, held the title of world's tallest building during the time span from 1890-2004. Includes close-up illustrations of each building and numerous facts...

Montgomery Cunningham Meigs (May 3, 1816 - January 2, 1892) was a career United States Army officer, civil engineer, construction engineer, and Quartermaster General of the U.S. Army during and after the American Civil War.

John Ericsson was born in Sweden, July 31, 1803. He early showed great inventive skill and was employed as an engineer in the Swedish service. He resigned in 1826 and went to England to introduce an engine he had invented. In 1829 he won...

Situated in north-eastern Wales, the 18 kilometre long Pontcysyllte Aqueduct and Canal is a feat of civil engineering of the Industrial Revolution, completed in the early years of the 19th century. Covering a difficult geographical...

General Cullum, born in New York city, February 25th, 1809, died in New York city, February 28th, 1892, was graduated from the United States Military Academy in 1833, and brevetted a second lieutenant in the Engineer Corps. During the...

General Warren, born in Cold Spring, N. Y., January 8th, 1830, died in Newport, R. I., August 8th, 1882, was graduated from the United States Military Academy in 1850, and assigned to the Topographical Engineers as brevet second...

From a book written by a civil engineer, John Debo Galloway, this article discusses the construction of the Central Pacific Railroad including construction methods, problems, and the eventual meeting of the rails at Promontory Point.

From a book written by a civil engineer, John Debo Galloway, this article discusses the construction of the Central Pacific Railroad including construction methods, problems, and the eventual meeting of the rails at Promontory Point.

From a book written by a civil engineer, John Debo Galloway, this article discusses the construction of the Central Pacific Railroad including construction methods, problems, and the eventual meeting of the rails at Promontory Point.

From a book written by a civil engineer, John Debo Galloway, this article discusses the construction of the Central Pacific Railroad including construction methods, problems, and the eventual meeting of the rails at Promontory Point.

Provides biographical information on Lewis Metzler Clement, the chief engineer for the Central Pacific Railroad, who both designed much of the route and supervised construction of the railroad.

Provides biographical information on Lewis Metzler Clement, the chief engineer for the Central Pacific Railroad, who both designed much of the route and supervised construction of the railroad.

Provides biographical information on Lewis Metzler Clement, the chief engineer for the Central Pacific Railroad, who both designed much of the route and supervised construction of the railroad.

Provides biographical information on Lewis Metzler Clement, the chief engineer for the Central Pacific Railroad, who both designed much of the route and supervised construction of the railroad.

Provides biographical information on Lewis Metzler Clement, the chief engineer for the Central Pacific Railroad, who both designed much of the route and supervised construction of the railroad.

Provides biographical information on Lewis Metzler Clement, the chief engineer for the Central Pacific Railroad, who both designed much of the route and supervised construction of the railroad.

Provides biographical information on Lewis Metzler Clement, the chief engineer for the Central Pacific Railroad, who both designed much of the route and supervised construction of the railroad.

Provides biographical information on Lewis Metzler Clement, the chief engineer for the Central Pacific Railroad, who both designed much of the route and supervised construction of the railroad.

Provides biographical information on Lewis Metzler Clement, the chief engineer for the Central Pacific Railroad, who both designed much of the route and supervised construction of the railroad.

Provides biographical information on Lewis Metzler Clement, the chief engineer for the Central Pacific Railroad, who both designed much of the route and supervised construction of the railroad.

Provides biographical information on Lewis Metzler Clement, the chief engineer for the Central Pacific Railroad, who both designed much of the route and supervised construction of the railroad.