On 18 January 2010, a passenger's luggage triggered a radiation alarm at the Chelyabinsk airport. The source of radiation was found to be a photo camera lens. The dose rate exceeded the background by 20 times. It is assumed that the lens contained Th-232.
Abstract Number: 20101014
Headline: Russia: Radioactive Lens Detected at Chelyabinsk Airport
Date: 18 January 2010
Bibliography: "В аэропорту Челябинска Изъять радиоактивный фотообъектив [At the Chelyabinsk airport, a radioactive photographic lense was confiscated]," UralInform Byuro, 21 January 2010, via www.uralinform.ru
Material: Presumably Th-232