Difficulty Swallowing (Dysphagia) 1  Print. 2  PDF. 3  Email. 4  Bookmark You must be signed in to bookmark pages. Sign in now. 5  Notes You must be signed into your pro account to make notes. Sign in now. 6  Listen Listen. 7  Translate Translate.
Miner Claudio Yanez applauds as he is carried away on a stretcher after being rescued from the collapsed San Jose mine where he had been trapped with 32 other miners for over two months in 2010 near Copiapo, Chile.
The Worldâs largest earthquake with an instrumentally documented magnitude occurred on May 22, 1960 near Valdivia, in southern Chile. It was assigned a magnitude of 9.5 by the United States Geological Survey. It is referred to as the Great Chilean Earthquake and the 1960 Valdivia Earthquake.The United States Geological Survey reports this event as the largest earthquake of the 20th Century.ther earthquakes in recorded history may have been larger, however this is the largest earthquake that has occurred since accurate estimates of magnitude became possible in the earnly 1900's. The earthquake occurred beneath the Pacific Ocean off the coast of Chile.