"VALLEY OF THE GIANT" U.S. ARMY CORPS OF ENGINEERS CONTROL OF MISSISSIPPI RIVER PROJECTS 49794 скачать в хорошем качестве

"VALLEY OF THE GIANT" U.S. ARMY CORPS OF ENGINEERS CONTROL OF MISSISSIPPI RIVER PROJECTS 49794

The United States Army and the Mississippi River Commission explain the importance of the Mississippi River as a major trade waterway in “Valley of the Giant,” a black-and-white from the 1940s. The film provides a comprehensive overview of the Mississippi River, emphasizing its vast geographic reach, economic importance, and the extensive flood control efforts undertaken to manage its power. The river drains 31 states and two Canadian provinces, serving as a critical transportation route for goods and linking inland America to international ports. Historically prone to catastrophic flooding—most notably in 1927—the Mississippi prompted the U.S. Congress to pass the Flood Control Act of 1928, empowering the Army Corps of Engineers to design a comprehensive flood management system. This system includes thousands of miles of levees, dams, floodways, and revetments. Engineers use advanced techniques such as dredging, soil analysis, cut-offs, and concrete mattress installations to control the river’s flow and protect communities, farmland, and infrastructure. These efforts have transformed the river from a destructive force into a vital economic artery, fostering growth, safety, and prosperity throughout the valley. 0:00 – Introduction to the Mississippi River Valley, described as the "Valley of the Giant," rich in natural beauty and geographic diversity. 0:58 – The Mississippi River is highlighted as the major drainage system for 31 U.S. states and two Canadian provinces. 1:27 – Begins in Missouri and extends to the Gulf of Mexico, receiving water from many tributaries along the way. 2:14 – The river flows past major cities like Memphis, Vicksburg, and Baton Rouge to the Port of New Orleans. 2:43 – The river is romanticized as historically significant and culturally rich, associated with Mark Twain and steamboats. 3:29 – Today, the Mississippi transports more tonnage than ever before, supporting national commerce and linking inland states to the global market. 4:27 – Dredging is used to maintain navigable channels for river traffic, ensuring safe passage from Cairo to the Gulf. 5:04 – Cutter head dredges work year-round to maintain a deep 35-foot channel for ocean-going vessels. 5:27 – Ports along the Lower Mississippi support global trade with cities like London and Naples, handling vast volumes of goods. 6:07 – However, the river occasionally floods, causing destruction throughout the valley. 7:30 – The devastating flood of 1927 is recalled, causing mass homelessness and loss of life. 8:22 – In response, the U.S. Congress passed the 1928 Flood Control Act, giving the Army Corps of Engineers authority over flood management. 9:01 – Engineers developed a comprehensive flood control system based on worst-case flooding scenarios. 9:31 – The plan includes levees, dams, floodways, and revetments to manage floodwater and protect the valley. 11:00 – Building these levees involves soil analysis, site preparation, and the use of heavy construction machinery. 13:11 – Dirt is hauled and compacted to form the levee structure, ensuring durability and proper shaping. 14:01 – Engineers survey the work, and levee slopes are sodded with grass to prevent erosion. 14:35 – River bends create flooding challenges, so the river is straightened with engineered cut-offs. 15:29 – Dredging and blasting techniques are used to create new, straighter channels. 16:35 – Once a cut-off is complete, the river adopts its new course, improving water flow and reducing flood risk. 17:02 – Meandering rivers erode their banks, threatening levees and farmland, requiring revetment protection. 18:33 – A gravel blanket is laid on the riverbank to prevent erosion under concrete revetment. 19:04 – Concrete mats are manufactured in sections using a production line, then cured and prepared for placement. 20:29 – These concrete mats are transported and installed on riverbanks using cranes and barges. 21:15 – Revetment mats are locked together and sunk to form a continuous protective layer. 23:16 – The upper banks are paved with asphalt-cement-sand mixtures to complete the revetment system. 25:00 – The system is designed to withstand the river's seasonal surges, protecting agriculture and cities. 25:40 – Industry is now safe to develop along the riverbanks due to effective flood control. 26:47 – Conclusion: the “giant” Mississippi is gradually being harnessed through engineering, offering hope for the valley’s future . If you have endangered films you'd like to have scanned, or wish to donate celluloid to Periscope Film so that we can share them with the world, we'd love to hear from you. Contact us via the weblink below. This film is part of the Periscope Film LLC archive, one of the largest historic military, transportation, and aviation stock footage collections in the USA. Entirely film backed, this material is available for licensing in 24p HD, 2k and 4k. For more information visit http://www.PeriscopeFilm.com