WILLIAMSON COUNTY, Tenn. (WKRN) — A planned explosion at the quarry in Franklin Wednesday rocked areas far beyond the immediate neighborhood after the blast was much larger than expected.
Hmmm, and no one realized that the explosive slurry was leaking into the ground? Hey Bubba, the hole is empty, keep filling it until it is topped off! For that magnitude of sound pressure wave, and to hurl rocks 2000 feet, meant that around 10 times the intended charge was put into the bore in the rock. And I thought that blasters were smarter than that.
Maybe I told this already. I blew shit up in Nam. Went down in a tunnel one day, came to a nice lil room all bamboo slats. Thumped on walls with stock of my piece, no hollow sounds. Put quarter stick of C-4 on the roof, lit the fuse and crawled out. I was standing there and guy walked up, how much C-4? Quarter stick. Then a fump sound followed by Kerfuckin boom. Rocks and dirt flying and it knocked both of us on the ground. Dust settled and the guy was coming at me really pissed. I said, I had a secndary man! Thought for a minute there I was gonna have to fight him.
I had a buddy, 1980 or so he fell and busted his foot pretty good. After healing he looked for local work, went into a mine office. They asked what he did. "Blaster" he says. We sandblasted and painted bridges.
They hired him on the spot. When I talked with him a couple years later he said it was not a complicated thing to do after all!
oops....
ReplyDeleteHmmm, and no one realized that the explosive slurry was leaking into the ground? Hey Bubba, the hole is empty, keep filling it until it is topped off! For that magnitude of sound pressure wave, and to hurl rocks 2000 feet, meant that around 10 times the intended charge was put into the bore in the rock. And I thought that blasters were smarter than that.
ReplyDeleteHe used the old P-factor for explosives. P = Plenty.
ReplyDeleteMaybe I told this already. I blew shit up in Nam. Went down in a tunnel one day, came to a nice lil room all bamboo slats. Thumped on walls with stock of my piece, no hollow sounds. Put quarter stick of C-4 on the roof, lit the fuse and crawled out. I was standing there and guy walked up, how much C-4? Quarter stick. Then a fump sound followed by Kerfuckin boom. Rocks and dirt flying and it knocked both of us on the ground. Dust settled and the guy was coming at me really pissed. I said, I had a secndary man! Thought for a minute there I was gonna have to fight him.
ReplyDeleteI had a buddy, 1980 or so he fell and busted his foot pretty good. After healing he looked for local work, went into a mine office. They asked what he did. "Blaster" he says. We sandblasted and painted bridges.
ReplyDeleteThey hired him on the spot. When I talked with him a couple years later he said it was not a complicated thing to do after all!
As blasterblog put it: plenty + more = enough.
ReplyDeleteFailed math class, miscalculated amount of explosives needed. Result...Big Badda Boom
ReplyDelete