3 of the Casualties Buried WALTHAM HOLY CROSS NEW CEMETERY Albert Lawrence John Parkes Charles Purkis George Cross Recipients William George Sylvester Stanley William Sewell Leo Francis O’Hagen http://www.ww2talk.com/forum/searching-someone-military-genealogy/20710-all-george-crosses-world-war-two.html On 18 January 1940 an explosion occurred while William Sylvester was working on the purification of nitro glycerine. His building was only 100 yards away from the explosion and suffered considerable damage including half of the roof being blown away. Hot water and air both important to the process were not available. William Sylvester continued to work in stabilising the chemicals despite being aware of the possibility of freezing and detonation at any time. Leo O'Hagan and Stanley Sewell working in a nearby hut during the same incident Mr Burgin, Minister of Supply commended the men - By their courage, discipline and determination these three men unquestionably prevented the explosion from spreading and saved alike buildings with vital supplies and their lives of their fellow workers. The initial award was an EGM ( Empire Gallantry Medal) but was exchanged in 1940 for the George Cross
