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Day inventory

1810 — officially announced the reopening of conceived by Peter the great the Mariinskaya water system — an artificial waterway connecting the Volga basin with the Baltic sea

1925 — USSR joins the International metre Convention

1970 — completed construction of the Aswan dam in Egypt, lasted 11 years

1975 — end of experiment “Soyuz–Apollo”

2010 — diversion on Baksansky hydroelectric power station (Kabardino-Balkaria, Russia). Damaged two hydro, two guards were killed.