In southeastern Russia, an iron meteorite fell on the Sikhote-Alin Mountains in 1947. Large iron meteorite falls have been witnessed, and fragments have been recovered, but never before in recorded history has a fall of this magnitude occurred. An estimated 23 tonnes of fragments survived the fiery passage through the atmosphere and reached the Earth.
More information from The Meteoritical Society
Sikhote Alin Fall to the world year 1947 in Primorskiy kray, Russia Total weight 23 ton