And then again at 19:22 the electric detonator had two types of explosives inside. The first was the primary (in those days probably mercury fulminate and potassium chlorate) which was sensitive enough to be ignited by the electrical spark or the blow from a hammer) which then set off the secondary PETN in commercial and probably TNT in military detonators.
Also, with the Nonel, it did have an "explosive" in it but where cordtex had grams per meter, the explosives within the hollow tube was about 1 gram per 50m (1lbs per 70 000 feet) and it detonated at about 2000 m/s. There was very little to be found of the cordtex after it had detonated whereas with Nonel, almost everything is intact after detonation.
At 9:40 SW mentions that cordtex detonates at 1000 m/s. It's actually 6000 to 7000 meters per second. Most cordtex brands will have a number associated with ie Cordtex 10 or 8 etc and that designates the number of grams of PETN per meter. SF probably never had the luxury of carrying "wasteful" amounts of explosives into their operations but there were different weights of cordtex and amazing things could be done (destroyed or cut) with just it, some grease (or under water as he mentioned) and a detonator.
Very inteligent officer Fourie SW
Very interesting. Thanks.
We did plastic explosive training when i was in the Navy in 76
And then again at 19:22 the electric detonator had two types of explosives inside. The first was the primary (in those days probably mercury fulminate and potassium chlorate) which was sensitive enough to be ignited by the electrical spark or the blow from a hammer) which then set off the secondary PETN in commercial and probably TNT in military detonators.
Boerkie your English is Top Notch😊🎉het jou Stories Baie Geniet. 😊
Also, with the Nonel, it did have an "explosive" in it but where cordtex had grams per meter, the explosives within the hollow tube was about 1 gram per 50m (1lbs per 70 000 feet) and it detonated at about 2000 m/s.
There was very little to be found of the cordtex after it had detonated whereas with Nonel, almost everything is intact after detonation.
At 9:40 SW mentions that cordtex detonates at 1000 m/s. It's actually 6000 to 7000 meters per second.
Most cordtex brands will have a number associated with ie Cordtex 10 or 8 etc and that designates the number of grams of PETN per meter.
SF probably never had the luxury of carrying "wasteful" amounts of explosives into their operations but there were different weights of cordtex and amazing things could be done (destroyed or cut) with just it, some grease (or under water as he mentioned) and a detonator.
dankie vir 'n interessante gesprek.....laat my terug dink aan AECI Modderfontein 😇
👍