One bright Summers morning in June was to become a day never to be forgotten to the people of Sandford and the surrounding area. Everybody knew about the 'secret' factory at Holton Heath and what it did. Moreover, those who worked there knew only too well the dangers they faced on a daily basis. The history behind the manufacturing of Nitroglycerine had a bad track record, its developmental pathway was paved with death and destruction. The oily yellow liquid had a bad characteristic; it was volatile, unpredictable and highly temperamental.