You read it right! During research on the history of pyrotechnic/firework manufacture I came across explosive corks time after time. These things were made and imported in the early part of the last century and I am keen to know more.
I believe they were used as burglar alarms in some instances in the same way as we now see alarm mines with shotgun blanks, they were also used as noise makes in toy guns that "need no licence" according to the blurb on the adverts.
Can anyone shed an light on the subject? They were certainly very significant in the market with several companies involved in their manufacture.
Paul M.