A team of rail engineers at Newcastle University has devised cheap and simple ways of reducing the deadly impact of terror attacks on trains and metros.
The engineers studied the devastation caused by similar bombings like the Madrid and London 7/7 bombings.
They have developed a range of blast-resistant designs, looking particularly at reducing debris and containing explosive shock waves.
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He has agreed a two-year contract at St. James' Park and becomes the tenth new face in the Magpies' first team squad this summer.
On the back of three consecutive Championship wins, the Magpies sit fourth, poised to move into the automatic promotion places.
Callum Young, who will now be 23, was last seen on August 27 last year at his home in Hylton Road.