more at
http://news.quickfound.net/intl/panama_news
.html
Aerial views of
Panama Canal construction near completion.
Silent.
Public domain film from the
Prelinger Archive, slightly cropped to remove uneven edges, with the aspect ratio corrected, and mild video noise reduction applied.
Panama Canal playlist http://www.youtube.com/playlist?list=PL107330AB7840283E
http://creativecommons.org/licenses/by-sa/
3.0/
http://en.wikipedia.org/wiki/Panama_Canal
The Panama Canal (
Spanish:
Canal de
Panamá) is a 48-mile (77.
1 km) ship canal in
Panama that connects the
Atlantic Ocean (via the
Caribbean Sea) to the
Pacific Ocean.
The canal cuts across the
Isthmus of Panama and is a key conduit for international maritime trade. There are locks at each end to lift ships up to
Gatun Lake (85 feet (26 m) above sea-level). The Gatun Lake was used to reduce the amount of work required for a sea-level connection. The current locks are
110 feet (33.5 m) wide. A third, wider lane of locks is being built.
Work on the canal, which began in 1881, was completed in
1914, making it no longer necessary for ships to sail the lengthy
Cape Horn route around the southernmost tip of
South America (via the
Drake Passage) or to navigate the dangerous waters of the
Strait of Magellan. One of the largest and most difficult engineering projects ever undertaken, the Panama Canal shortcut made it possible for ships to travel between the
Atlantic and Pacific Oceans in half the time previously required. The shorter, faster, safer route to the
U.S. West Coast and to nations in and along the Pacific Ocean allowed those places to become more integrated with the world economy.
During this time, ownership of the territory that is now the Panama Canal was first Colombian, then
French, and then
American before coming under the control of the
Panamanian government in
1999. The Panama Canal has seen annual traffic rise from about 1,
000 ships when it opened in 1914, to 14,
702 vessels in 2008, the latter measuring a total of 309.6 million Panama Canal/
Universal Measurement System (PC/
UMS) tons. By 2008, more than 815,000 vessels had passed through the canal, many of them much larger than the original planners could have envisioned; the largest ships that can transit the canal today are called Panamax.
The American Society of Civil Engineers has named the Panama Canal one of the seven wonders of the modern world
...
French construction, 1881--89
In 1881, the first attempt to construct a sea-level canal began under the leadership of
Ferdinand de Lesseps, builder of the
Suez Canal, with substantial financing and support from
Paris.
The French effort went bankrupt after losing an estimated 22,000 lives and reportedly spending
US$287,000,000, and was largely abandoned by 1890....
United States acquisition, 1904
In 1904, the United States, under
President Theodore Roosevelt, bought the French equipment and excavations for
US $40 million, paid the new country of Panama
US $10 million plus more each year, and began work on the Panama Canal on May 4...
The building of the canal was completed in 1914, 401 years after Panama was first crossed by
Vasco Núñez de Balboa. One of several new innovations was the four to eight electrical-powered "mule engines" on each side of the locks that were attached to each ship to stabilize their passage through the locks as they were guided through by canal pilots
.
In the end, the engineers and workers minimized the mosquito threat; moved, rebuilt, and expanded the
Panama Railroad; excavated over
200,000,000 cu yd (
150,000,000 m3) of earth; built the world's largest (then) dam and a lake; poured about 2,000,000 cu yd (1,
500,000 m3) of concrete creating a spillway at Gatun Lake to control its height; and formed three sets of double 110 feet (34 m) by 1,000 ft (
300 m) ship's locks, then the largest concrete pour in the world. This was supported by an extensive buildup of U.S.-built, then-modern, heavy-duty excavation and construction equipment, and one of the world's earliest and most extensive electrical systems, used to power and control the flow of water into the locks and spillway.
The United States spent almost $375,000,000 (roughly equivalent to $8,600,000,000 now[27]), including $12,000,000 to build facilities used to guard the canal, to finish the project. This was by far the largest American engineering project of that or any previous era. The canal was formally opened on
August 15, 1914, with the passage of the cargo ship SS
Ancon.[28] Coincidentally, this was also the same month that fighting in
World War I began in
Europe. The advances in hygiene resulted in a relatively low death toll during the American construction; still, about 5,600 workers died during this period (1904--14), bringing the total death toll for the construction of the canal to around 27,500...
- published: 21 May 2013
- views: 1903