Swedish dams, some which are 100 years old already, are getting upgraded. This example, on a 50 year old dam, is supposedly prolonging the lifetime by 100 years

Swedish dams, some which are 100 years old already, are getting upgraded. This example, on a 50 year old dam, is supposedly prolonging the lifetime by 100 years. In Swedish: http://www.entreprenad.com/kategorier/alla/rekorddamm-far-100-extra-ar/ http://www.entreprenad.com/kategorier/alla/rekorddamm-far-10...