Nightjar said:Rockhunter62 said:Hey Peter, I think you may have meant cordtex. Cordite is an old straw like propellant used in old small arms ammunition ie: very old .303 cartridges. Cordtex is a plastic coated cord that has PETN as a filling and detonates at around 7000 metres per second.
Doug
That's the one Doug, "cordtex", corrected my post but still spelt it wrong..... :zzz:
50 years have lapsed since I watched them loading blast holes, hope my memory can be excused? :lol:
How do they arrange the timing so the open cut face comes down in slices? Old memory again recalls something about the blast not "rocking"?
ie: Rocks not being sprayed endangering plant/equipment and workers?
They use delays between the rows Pete.
Cheers
Doug