Cyanide
Cyanide 356 times limits found at China blast test point
Cyanide levels more than 350 times standard limits have been detected in water close to the site of deadly explosions in the Chinese port city of Tianjin.
20 August 2015, 11:48 AM
'Cyanide letter' sent to White House, says Secret Service
The US Secret Service says it is conducting further tests on an envelope posted to the White House which may contain cyanide
18 March 2015, 06:43 AM