Hans-Åke Nordström Hans-Åke Nordström Hans-Åke Nordström (born c. 1934) is a Swedish archaeologist and professor at Uppsala University. His work has included excavations in parts of Nubia, submerged since the construction of the Aswan Dam, and the development of the Vienna System for classifying Egyptian pottery. Hans-Åke Nordström was born around 1934. During the 1960s he excavated parts of Nubia, an area between Aswan in Egypt and Khartoum in Sudan, which were submerged following the construction of the Aswan Dam. In 1972 he received his Ph.D., on the basis of his thesis "Ceramic Ecology and Ceramic Technology. Early Nubian Cultures from the
Risks to the Glen Canyon Dam of between 500–700 years. Glen Canyon Dam is a concrete arch dam on the Colorado River in northern Arizona in the United States, just north of Page. The dam was built to provide hydroelectricity and flow regulation from the upper Colorado River Basin to the lower. Its reservoir is called Lake Powell, and is the second largest artificial lake in the country, extending upriver well into Utah. The dam is named for Glen Canyon, a colorful series of gorges, most of which now lies under the reservoir. Construction of Glen Canyon Dam started in 1956 and was not finished until