Hi,
'The factory' was destroyed in the explosion but the site still houses workshops and stores. The greater site used to be half REME and half Ordnance stores but much has been sold off. The site though is still substantial and used by the regular army as well as territorials.
My GGdad was said to be the last victim of the explosion, I have been told that he was blown off a haystack and died of his injuries 5 months later. Fact or not, I do not know.
There is a memorial in the barracks and if you are doing a serious piece about the history you should contact the commandant and you may get a visit if this will help you.