1.   Two youths questioned in connection with an attack on a woman in Hebburn in which caustic liquid was squirted in her eyes have been released without charge after questioning.

2.   If you have used a caustic liquid try to bail out as much of it as possible and continue to work with rubber gloves and goggles.

3.   Purifying the plutonium required vast amounts of nitric acid, hydrochloric acid, hydrogen fluoride and other caustic liquids.

4.   Police have said they are not yet certain what kind of caustic liquid the attacker used.