8ball
Decolonise colons!
It isn't a huge problem if you are firing with Cordtex, you use a single detonator for each circuit, a circuit may be 100 holes. The Cordtex is itself a detonator, a high explosive that provides the 'bang' to set off the gelignite. There is a security aspect, you really should know where all your gelignite is.
When firing electrically, each hole has it's own detonator, so if the electrical circuit is broken, you have holes with gelignite, and a live detonator. Gelignite, is pretty inert. You can burn it to boil a kettle, it burns white hot. Detonators are sensitive things, you never hold the body in your fingers, on a cold morning the heat from your fingers can set it off. You grip by the wires, and push it into the stick of gelignite. If there has been a misfire, when the machine is dragging out the broken rock and encounters a detonator, it can set it off. Usually not a dramatic explosion, it is flying splinters that are the danger.
At Lochaline, 43 holes were left unblown due to a short circuit caused by a blasting mat. Luckily, I was able to re-rig the circuit, and got them blown. There rock was cracked from the shots that did go off, but the machine man flat refused to rip it out.
Makes sense. Best end the derail here, though.
Spoiler is off-topic.
Yeah, I’m familiar with gelignite and Cordtex. The first makes good firelighters and the second makes for decent improvised clothes line in a pinch.
My Dad once accidentally set off a detonator in the kitchen when I was a kid. Mum wasn’t impressed and it took us a while to find the cat.
My Dad once accidentally set off a detonator in the kitchen when I was a kid. Mum wasn’t impressed and it took us a while to find the cat.