surface benchmark
121German Aerospace Center — Deutsches Zentrum für Luft und Raumfahrt e.V. Established 1969 Headquarters Köln Porz Administrator Johann Dietrich Wörner …
122Reclaimed water — Reclaimed water, sometimes called recycled water, is former wastewater (sewage) that has been treated to remove solids and certain impurities, and then allowed to recharge the aquifer rather than being discharged to surface water. This recharging …
123Metronet — Rail Ltd Type Private / consortium Industry Railway infrastructure Fate In administration 2007, dissolved 2009 …
124Health issues in American football — There a number of issues relating to public awareness and health aspects of American football. Since the invention of the game, it has seen a higher injury and death rate than any other major American professional sport.Fact|date=January 2007 Due …
125Duct (HVAC) — A round galvanized steel duct connecting to a typical diffuser Fire resistance rated …
126List of lakes by depth — This page lists the world s deepest lakes. Contents 1 Lakes ranked by maximum depth 2 Lakes ranked by mean depth 3 Greatest maximum depth by continent 4 …
127Diamond (gemstone) — Part of a series on Diamonds Material Material properties Crystallographic defects Formatio …
128History of timekeeping devices — For thousands of years, devices have been used to measure and keep track of time. The current sexagesimal system of time measurement dates to approximately 2000 BC, in Sumer. The Ancient Egyptians divided the day into two 12 hour periods, and… …
