Overburden shot

[yaza7845]

first thing i want to say that my english is not good..

i've some question

that is pre-split blast on the last row in front of slope ?

i want to discuss with you about controlled blasting ? do you mind ? my email addres : yazaazhari@gmail.com . thank's sir.

[squawcreekkid]

beautiful....



[alf0rrana]

SENYOR PIROTECNIC,.. POT COMENÇAR LA MASCLETÀ....lol

[ExquisiteRain]

That shit feels cool

[badback22]

Thx for post. Why was there that explosion along the fuse at 0:7 please?

[rollingthunder04]

@badback22 the explosion along the fuse is where we spliced 2 coils of 3.5g cord together - left about 15m on the roll at the junction

[Bael130702]

Nice shot!

[epistte]

Is this at the Ensham mine?

[rollingthunder04]

5m heavy toe in that sucker, column charge of normal anfo... PF was about 0.4 - nice soft siltstone/mudstone - only issue was the bench in the far end, had to step up and down in height at the same time to avoid cut-offs, hence the frag that goes flying at the start

[rollingthunder04]

yep, dyno non-el 42's on the centre zipper, 109s herring-boned off on the echelons

[renatobvillanueva]

Nice firing sequence, is it a non electric detonator employing zepper cut V - 1 ?

[rollingthunder04]

@renatobvillanueva yup - centrelifted shot using non-el... zipped down the middle with 42ms, and herringboned off the zipper with 109ms.....

[robolyn]

looked like surface delays. Somewhere around 14's? Perfect shot though it rolled right through and no one died :)

[robolyn]

was that straight anfo or heavy anfo?

[ch00bz0rzz]

wow amazing shot

[thehouse719]

Wow low powder factor eh? I have never blasted at a coal mine but I hear it can be quite a bitch. especially if you get those rolling coal seams all over the place. very nice shot.

[norteside1]

wow!!!!

[lilham10809]

that looked insane

[dynoblasterbabe]

WICKED....they always look better when they are coming right at the camera....good work!

[dustystix76]

that is friggin awesome! 5 stars!

[jclyde57]

that was a good shot man

[Ballowall]

Wow

[meatwad5849]

that sure looks like a coal shot to me.

[nchayfarmer]

how much do it cost a mine to have one shot like this

[zoomvidsjc1]

how much coal does that break up? would you say about 10-20 feet of ground is excavated by doing that? That was a lot of explosives. Was it old style tnt or that new stuff I can't remember the name of? (I learned tnt barely used anymore from discovery channel or something.)

[rollingthunder04]

hole depth is about 16m on average, and thats not coal being blasted, its overlying rock.... explosive used was a combination of a heavy anfo toe of 5m, and the column packed with anfo, with 5m of stemming on the top....... total powder factor for the shot was between 0.33 and 0.37

[trysegai]

What's anfo? I drive a truck in a limestone quarry (i'm not a blaster). My company uses ammonium nitrate. How long did it take to drill all those holes?

[rollingthunder04]

took about 3 days for a pair of drills to do the holes. anfo is Ammonium Nitrate + Fuel Oil

[BoTMSapper]

@rollingthunder04 mmmmmm anfo, love playing with that stuff

[HardRokMiner]

You don't blast coal. Coal is a soft rock. All you gotta do to mine coal is dig at it and let it cave in. You can't blast in a coal mine due to the Methane. No flames or sparks alloweed in a coal mine or...BOOM!!!! You'll be pickin your eye balls outta your asshole.

[dynoblasterbabe]

you do blast coal....check out my vids....email me if you have any more questions

[HardRokMiner]

Yes i meant to say in underground mining you cant don't blast coal. Surface blasting is different.

[dynoblasterbabe]

yes, surface blasting is very different....i guess that i was assuming since the vid you commented on was above ground that you were referring to above ground blasting....but, in that case, you are correct about underground.... :)

[Initbrap]

lol! ownage!