Blasting shallow trenches through hard granite

Just recently I was working on this site to blast all of the huge rocks and make it level in preparation for the house slab, now I'm back to help the plumbers get some drain pipes and pits in. Nothing easy about this type of job, the mud and persistent ground water made it more challenging.
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[@gregoryburton4328]

Another great video 👍, Thank you.this channel should have at least 100,000, subscribers,by now.WFT.

[@demolitiondavedrillandblast]

It would have Gregory but the powers behind KZbin have a serious Leftist bias and I am easily profiled by my online viewing and posting habits that give me a poor KZbin social credit score. Not just me, this is a very wide spread phenomena. Interestingly when this channel was first launched the videos were crappy with poor editing, no commentary and not much of a story and it BOOOMED! Then something happened around October 2018 and the views went flat and very predictable in that all the subscribers got to view but not much promotion to new viewers, It is very clear in the viewer statistics the YT provide. Since this time the production quality has improved so much with slo-mo and time lapse, drone video and much better editing but I struggle to reach the growth figures of the first year.

[@paulcooper2897]

Sunday morning coffee and Demo Dave! Perfect! Thanks for sharing 🇨🇦

[@demolitiondavedrillandblast]

That is what I do on Sunday mornings also Paul, grab my huge++ coffee cup (bucket) and watch youtube.

[@SJR_Media_Group]

Winter tires??? It's finally Summer here. Almost forgot my mates down under are 6 months different in seasons. It would be hard to celebrate Christmas in the Summer. Dave love your attention to detail. The smallest error can really mess things up. Size and depth of holes, explosive loads, tamping, delays in blasting caps, etc. Let's not forget going the extra mile, or is that kilometer there, adequate backfill to protect surroundings. All that helps guarantee awesome results. I can still remember the first time I was close to a controlled blast. Charges were probably a meter deep. Backfill was added on top of that. When it went off, there was almost no sound, but there was a thump that traveled through the ground. And the pile of backfill lifted. After it was over, I was trying to calculate just how much energy was released. Moving 5 feet of dirt straight up in under 1 second takes a lot more energy than I could ever produce with a pick and shovel. I can even still remember the smell of exploded Nitro. There must be dozens of other blasters around Sydney and Melbourne. But your satisfied customers are your best advertising. Got hard rock in the way.. Call Demolition Dave. He will turn boulders into gravel... and they can keep the spoils.

[@demolitiondavedrillandblast]

Hey doing anything in the nice summer weather is easier than snow Steven.

[@SJR_Media_Group]

@@demolitiondavedrillandblast Great point Dave... and we do get snow where I live. Kind of a Holiday buster when you have to shovel snow and drive in it. Guess I better sell my house and cars and move to Australia.

[@allanharris4492]

What ever was the plumber thinking when he put those pipes in before all the blasting was done. Keep up the good work sir.

[@SauronsLeftNut]

i was thinking the same thing, but looking at water puddle next to blast it didnt react at all so mabey plumbing not a problem

[@demolitiondavedrillandblast]

If you have a look at the previous video of blasting to clear the site you can see how close many of the huge rocks were to the pipes. I think we only broke one with the blasting and the excavator clobbered another. - kzbin.info/www/bejne/Y32TaYirZcSbars

[@alfadoofus]

Thanks for taking the extra time to film that. The second set looked really cool on the slomo with the smoke coming up through the dirt. The skippy's chillin is always nice.

[@demolitiondavedrillandblast]

Skippy is just waiting for the next car to come so he can jump out.

[@alfadoofus]

@@demolitiondavedrillandblast We have the same problem but with Moose.

[@brownwarrior6867]

@@alfadoofus We have the same problem in the U.K. with NCP’s on Mobile Phones. Good set of bull bars on yer Fiesta and bam they’re gone 👍🏼

[@alfadoofus]

@@brownwarrior6867 💢💥😅

[@brucet8551]

a muddy messy job with a happy plumber at the end.thanks Dave for sharing.

[@demolitiondavedrillandblast]

Errr... he was not that happy Bruce as the job was going to go late on a Friday for him.

[@Splits-man]

The bit that baffles me is how you know how deep to drill. Go too far and your wasting a shot. Go too high and the job won’t be done properly. I guess that’s why your the king of bang! 💥

[@alexdrockhound9497]

oh hell yeah! Another video from dave! Im going to pause the other thing i was watching to watch yours first.

[@demolitiondavedrillandblast]

You Rock Alex!

[@Battleborn-Gaming1]

Dude has the greatest job I would love to do this.

[@demolitiondavedrillandblast]

Hahahhaha... you think so?? It can be good but not always BBG.

[@geedubb2005]

So you want to run an air drill and shove all day? Gotta start at the bottom

[@kenore4003]

Kinda like romance. Hours of backbreaking work for a brief moment of joy.😂😂😂😂😂

[@demolitiondavedrillandblast]

@Ken Ore - You are not the first person to draw that parallel!

[@scruffy6151]

The job that keeps on giving.

[@demolitiondavedrillandblast]

And it's not done yet, that drain pipe has to run all of the way down to the street and the driveway needs to be formed up. About 8-10 years ago I blasted to make this road and got rid of some huge rocks up near the front gate on this property... "I'll Be back".

[@scruffy6151]

@@demolitiondavedrillandblast The rock terminator..

[@davekiernan1]

Good work. Best way to commit civil blasting job, is , more holes, smaller and lower vod nitro glrisine cartridges and nonel dets. And plenty of drill cuttings for stemming, cover it up with muck and no flyrock. Keep it simple.

[@demolitiondavedrillandblast]

That is the way Dave!

[@jakepekarik7772]

Morning coffee with a BANG, thanks for the video Dave.😄👍🦘🦘🦘

[@demolitiondavedrillandblast]

My pleasure, thanks for watching.

[@tokencivilian8507]

I like how on that 2nd one, a whole bunch of fractured rock "magically" made it to the top of the cover pile. 🙂

[@demolitiondavedrillandblast]

That was "just right".

[@morrislouiseeagle7161]

thanks Mr D for another blast- much appreciated x

[@demolitiondavedrillandblast]

My pleasure MLE

[@roberthughes6240]

Thanks Dave, always enjoy a bit of rock lifting in the morning, its hard work but the outcome is great

[@demolitiondavedrillandblast]

Thanks Robert, nothing easy about my job when it is wet.

[@jamesstanton1916]

Dave, I love the "rock" music.

[@demolitiondavedrillandblast]

Thanks James, it all came from the KZbin royalty free library.

[@RogowskiBubba0864]

Thx for the video, have a nice Sunday Dave 🫡

[@demolitiondavedrillandblast]

Thanks Arie, we have a uncommonly nice winter day here today.

[@williambryce8527]

Skippies and a muddy mess! Great work as always!

[@davidhandyman7571]

As the poms would say, "Smashing job!"

[@demolitiondavedrillandblast]

Yes, that is very English, thanks for watching David.

[@user-qy1zc4rh4w]

Thanks for sharing Dave . That set up is sure a lot of work.I always enjoy trench shots.😊😊😊That new drill is wonderful.😊

[@demolitiondavedrillandblast]

The new drill is a rocket Mark, even better now that it has loosened up a bit.

[@williamjacobs236]

Another great video Dave .

[@demolitiondavedrillandblast]

Thanks for watching William.

[@ChrisB257]

More nice work Dave - always like the sequential firing nature of trenching shots. :)

[@demolitiondavedrillandblast]

That is really the only way to do it that works good.

[@rockman531]

Hi Dave, The lightning bolts in the slomo are really cool! So is "London fog" smoke! Any jobs coming up that won't require a dirt cover? Flying rock is always the best video!! Take Care, Stay safe! Jim

[@demolitiondavedrillandblast]

There could be a "free range" job on the radar Jim, not sure yet.

[@scotthultin7769]

43👍's up demolition Dave the most explosive guy and KZbin thank you for sharing🎉

[@demolitiondavedrillandblast]

Thanks for tuning in again Scott.

[@paulsto6516]

Always a good show!

[@demolitiondavedrillandblast]

Thanks for tuning in Paul.

[@mirekmarshall6113]

Can you feel the percussion of the blast. I always have to get as close to the fireworks as I can get. I love that feeling.

[@demolitiondavedrillandblast]

Not on a covered shot like this one, on a shot that is not covered, especially one that is hooked up using detonating cord... Heck yeah++ like this one - kzbin.info/www/bejne/qZPbgqasi6ahkKc

[@lerkzor]

Thanks for the upload, Dave. It's always a blast to watch your videos!

[@demolitiondavedrillandblast]

Thanks for watching and contributing.

[@rangefreewords]

I would hate to see how many hammer drill bits you went through during this. Good on ya!

[@demolitiondavedrillandblast]

Only 2, they are very tough Mike.

[@valunov]

professional as always!

[@demolitiondavedrillandblast]

Thanks Yuri, good to see you here.

[@ReadTheShrill]

5:01 Uh oh! Rock in the tread!

[@demolitiondavedrillandblast]

Just the right size.

[@Dan_Hall]

Hi Dave, Have you thought about teaching an OJT class? People fly in for 2 weeks, help you drill, and you teach them the finer points of the Art and Science of what you do. I would sign up. P.S. Maybe even just an online "masterclass" subscription where you could teach with online live lectures and graphics with live chat sessions where people can ask questions. P.P.S. Camera is on order. Hopefully some vids with the summer jobs.

[@TheGingerGenius78]

Nicely done Dave :) winter tyre swap is needed ! Just put some decent tyres on the world Hilux made all the difference!’

[@demolitiondavedrillandblast]

Need some BFG Mud terrains.

[@TheGingerGenius78]

@@demolitiondavedrillandblast oh yes the bid had Khumo muds put on they are good but not like the BFGs !! :)

[@alexdrockhound9497]

I can hear the local mine's blasting sirens from my house and see the big clouds of dust. They mine copper and moly.

[@demolitiondavedrillandblast]

Good to watch if you ever get the opportunity.

[@garymurt9112]

Your video's are always a blast ❤❤❤❤❤❤

[@demolitiondavedrillandblast]

Thanks Gary, there is more in the pipeline.

[@lafarms]

Dave love your videos.. May I suggest your music between talking segments comes through louder. Best David

[@demolitiondavedrillandblast]

Ah... interesting that you should say that, the level is carefully set @-6db, earlier videos the music was louder and people complained, I might do a viewer pole on that, thanks.

[@ReadTheShrill]

​@@demolitiondavedrillandblast The music is fine to me. I wear headphones and any louder and I'd have to turn it down each time.

[@zorbakaput8537]

Great work, can't imagine living on ground like that, owners will have trouble keeping any trees alive in summer. Rock drilling/work is never included in base cost/quote for construction in my experience so god know how far the owner went over budget on this.

[@demolitiondavedrillandblast]

I'm not expensive compared to some other contractors that have an inflated opinion of their worth.

[@sonnyzeitgeist2570]

Excellent. Woot woot.

[@demolitiondavedrillandblast]

Woot woot - exactly!

[@bobjoncas2814]

LOOKIN' GOOD, KEEP SAFE

[@demolitiondavedrillandblast]

Always trying to be safe.

[@Murphyslawfarm]

G'day Dave

[@demolitiondavedrillandblast]

Hi there!

[@grumpyg9350]

14:40 was very cool.

[@demolitiondavedrillandblast]

Thanks.

[@markg4327]

Hey Dave -Is the stick just for pointing where the dirt goes next? or does it have other mysterious uses?

[@garymurt9112]

I think he uses it to push the charge down the hole and make sure it's at the correct depth. Where I work at a quarry, they use a weighted measuring tape they drop it in the hole as they pump the amfo in and pull it up and bounce it as they bring it up. They don't cover our shots since it's far enough from any residents. I did work on a jobsite where they had to cover the shot and the blaster did point at where he wanted more cover those holes where deeper to so they did the weighted tape to.

[@kripke2670]

I am not Dave ;P It is his Multitool ;) Pointing for the digger - measure the depth of a borehole - compressing a load in a borehole and hold and lean to look important ;P - cheers

[@demolitiondavedrillandblast]

Hi Mark, the stick is calibrated in 100mm increments, I use it to measure when marking out drill patterns, measuring hole depths prior to loading, checking for water in holes, sometimes for carefully checking that the charge has reached the bottom of the hole, sometimes for compacting the stemming in the hole, for pointing where I want the cover and probing through the cover to check how much cover is on the rocks.

[@exacto4]

Thanks for the reply Dave. I was wondering about all those massive rocks you dislodge and pile up like little mountains on job sites. Seems a waste of good material if they are just dumped.

[@demolitiondavedrillandblast]

It would be unusual for them to be dumped #44, in this case they are going to be used on site and the remainder going to the guy next door.

[@danosmixedgrill6067]

Hi, Great video. With all that water around, would you use waterproof explosive like packaged emulsion? I imagine powdered anfo wouldnt be suitable. Cheers Daniel.

[@demolitiondavedrillandblast]

Yes, absolutely. The holes that make water get 100% emulsion.

[@Wingnut_Stickman]

Nice.

[@exacto4]

Great videos! Love the action but what happens to all the granite you blow out?

[@demolitiondavedrillandblast]

On this job it will be used on site to edge a filled area to level part of the back yard.

[@TechGorilla1987]

During the first loading time lapse, what's with grabbing some dust cuttings from the vacuum container?

[@demolitiondavedrillandblast]

Good spotting! The charge in the hole consists of part of a stick of packaged emulsion explosive with a det in it and a small scoop of ANFO, the ANFO is extremely hydroscopic. The screened crushed rock that I am stemming (back filling) the hole with is a little bit wet, and the ANFO can suck all of the moisture out of the stemming and be ruined if there is any delay between loading and firing. The dash of stone dust acts as a dry buffer between the ANFO and wet stemming material. I have had this happen when the excavator lost a track and it took a few hours to get it back on - the shot was a complete failure!

[@TechGorilla1987]

@@demolitiondavedrillandblast Brilliant! That is experience at work.

[@jwaterous224]

On the first shot of this vid I noticed in the slo - mo a sound like a wooden spoon hitting the bottom of a iron pot. Not a crack sound but more like "metalic clank." Does the ignition tube have explosives within it that have metalic components? Cheers Dave!

[@demolitiondavedrillandblast]

The plastic signal tube has and extremely thin layer of HMX and fine aluminum powder inside.

[@jwaterous224]

@@demolitiondavedrillandblast Since I was wearing my nice headphones I assume your vids are really high quality since i'm here in Minnesota and can hear metal cracking so clearly! Thx Dave!

[@hisham56hamilton50]

Hi Dave thanks for very good vids which became a drug to me !! Please can you explain the benefits of using chemical cracking agent and not demolition ? I really do not get it still. Is it more enviroment friendly or what is the main reason ?

[@demolitiondavedrillandblast]

Explosive are usually the fastest and cheapest option but not always viable because of safety concerns or ground vibration concerns that may damage buildings etc.

[@blakemcleod95]

I’m a shotfirer up in Queensland, I would love to come down and see how you run your shots.

[@demolitiondavedrillandblast]

Come and drill some holes Blake. Post some video on your channel.

[@resurgam_b7]

Thanks for the neat video :) I have a question: In the slow-mo of the second shot, I saw the flash from the shock tube you put at the end and I recall in a previous video you said that you put tape on it so that you can confirm that all the shots went off. It just occurred to me, what do you do if the tape isn't broken? I'm sure that doesn't happen often or else blasting would be done a different way to make sure it was reliable but I'm equally sure it does happen occasionally otherwise you wouldn't need to check so I'm curious what the procedure is for that situation, how do you make the site safe and finish disassembling the rock that didn't get cracked on the first try?

[@demolitiondavedrillandblast]

First thing after the shot is to check the witness tube(s), if the tape over the end of the tube is not punctured it is oh $h%^$#!... Short answer, kiss the rest of the day goodbye because there is a lot of spade work coming up - examine the slo mo video and try and determine where the blast stopped. When you have a partial misfire because some clown driving the digger did not sieve the covering soil properly to get the rocks out and a rock in the cover cut a signal tube through, you have to uncover it very carefully to fix the fault, when you get close to the rock level (constantly probing through the cover with my calibrated stick), you get out the spade and then the compressed air blow pipe, trying to find the point of failure, having the holes painted make it a bit easier, you find where the shot has stopped because the signal tube is damaged and join in a new lead in line, re cover and re fire the shot. Thanks for watching and contributing

[@vsvnrg3263]

@@demolitiondavedrillandblast ,so how long has it been since you needed to find such a partial misfire fault?

[@resurgam_b7]

@@demolitiondavedrillandblast Thanks for the explanation! That does sound like the recipe for a rotten day. Here's hoping you don't have to deal with that situation often!

[@AW-Services]

Awesome skill and knowledge. You need someone to fabricate a clamp on drill lower bracket with BMX stunt pegs. Save your leg over method. I've heard of white finger but while willy must be painful 😅

[@demolitiondavedrillandblast]

Heck... I had better get onto that right away.

[@AW-Services]

@Demolition Dave Drilling and Blasting just an idea which may benefit your drilling method and ease of adding body weight

[@tugboat2739]

Howdy demo Dave

[@demolitiondavedrillandblast]

I'm all good over here thanks, what is happening in your part of the world?

[@tugboat2739]

@@demolitiondavedrillandblast doin well sir been dodging thunderstorms last week got a chance for more this week Stay safe

[@Rideaupools]

Did you ever come across rock you couldn't drill by hand? We had some rock where we only got 1" into it after 10 minutes with a hand operated Atlas Copco.

[@demolitiondavedrillandblast]

No, we do get some rock that is about twice as hard as this Granite though.10 Min/inch??? you can drill mild steel faster that that.

[@jasethesmiff5683]

U dont have to chase the water out before u load the holes?

[@demolitiondavedrillandblast]

Yes, always best to do this, a must if you want to use ANFO as the water kills it quick, when a hole is making water fast because of cracked ground, you just have to skip the ANFO and load it with 100% packaged explosive as this is waterproof.

[@ookalleoo]

👍

[@kaleipoxxc2428]

Have you tried emulex 2 plus from austin powder? I Just began using it, i really like it..

[@demolitiondavedrillandblast]

We don't have that product in Australia, looked it up and it sounds similar to what I'm using, possibly a bit more grunt. - www.oricaminingservices.com/au/en/product/products_and_services/packaged_explosives/page_packaged_explosives/senatel_magnum/88

[@demolitiondavedrillandblast]

You need to post some video.

[@kaleipoxxc2428]

Have tried senatel powerfrag. But i like emulex better do far. Best not to scare people with my face 🤣

[@demolitiondavedrillandblast]

Powerfrag is the economy product, no aluminum in it.

[@borisjohnson1944]

What are all those pipes sticking out of the ground for?

[@demolitiondavedrillandblast]

They mark the location of all the under slab plumbing connection points

[@borisjohnson1944]

@@demolitiondavedrillandblast Thanks, Dave.

[@butchphillips873]

Just love Bangers and Smash😁

[@MostlyInteresting]

Wow I would call that mud blasting...

[@demolitiondavedrillandblast]

Yeah, not the time of year for it.

[@kat2641]

I am surprised the water does not affect being able to blast… I’m not sure with the granite if absorbs, water or not to affect the explosive .. one thing I did learn ! Tho there’s a huge difference I see when you cover with dry soil or whether you’re covering with wet soil, the dry soil absorbs the concussion better than the wet soil does I see so I learned something today❤

[@demolitiondavedrillandblast]

Always best to remove the water, a must if you want to use ANFO as the water kills it quick, when a hole is making water fast because of cracked ground, you just have to skip the ANFO and load it with 100% packaged explosive as this is waterproof. Good spotting the difference between wet and dry cover, the wet certainly conducts and radiates a lot more noise.

[@frozenjoe6313]

@@demolitiondavedrillandblast ?? The above guy joe henry is a different fan than the joseph Henry in Idaho, U.S.. And you should recieve a small present/ from Idaho.. in your P.O. box in about 2 weeks . Glad your new drill is fixed and working well.......

[@demolitiondavedrillandblast]

Hey Joe, I can not answer your emails because the return address bounces every time. do you have another email address that I can try??

[@frozenjoe6313]

I am still needing to speak with my computer whiz son to fix the bounced or rejected E mails....... I suggest you refer to this wack job shown above as " Joe Mama ". I didnt trust that P.O. box number you had on your old videos which is why I need my sons help... So I can use some details from your prior e mail to me, Like the fact you looked up my address and spotted it on google just on the edge of town.

[@frozenjoe6313]

@@demolitiondavedrillandblast I am checking with my computer whiz son. Sorry for the delay. If you think your P.O. box number will accept a double sized letter please post your p.o. box number here and now. and I can check on the g mail address over the weekend.. Thanks.

[@SauronsLeftNut]

Noob Question. Is there no ground shock at all?? watching puddles and no reaction to blast right beside it.

[@demolitiondavedrillandblast]

Very small when it is done properly... but still some people think the sky is falling and complain.

[@SauronsLeftNut]

@@demolitiondavedrillandblast expertise always helps.

[@mariaviklund4546]

What's the purpose of spray painting the holes? =)

[@demolitiondavedrillandblast]

When you have a partial misfire because some clown driving the digger did not sieve the covering soil properly to get the rocks out and a rock in the cover cut a signal tube through, you have to uncover it very carefully to fix the fault, when you get close to the rock level you get out the spade and then the compressed air blow pipe, trying to find the point of failure, having the holes painted make it a bit easier.

[@mariaviklund4546]

@@demolitiondavedrillandblast That makes sense. Thanks Dave, take care =)

[@user-wj4cd7xi1q]

Hello, Mr. Dave, the website of the online store from which you bought this machine that removes dust and dirt? Can you provide me with a website? I hope you have a great day

[@demolitiondavedrillandblast]

The vacuum system is a Pulman Urmator S26, they were recently bought out by Husqvana - www.husqvarnaconstruction.com/int/dust-and-slurry-equipment/s26/

[@user-wj4cd7xi1q]

@@demolitiondavedrillandblast Thank you for your prompt reply. You are a loyal and persistent person, and you deserve follow-up and attention to what you are doing... Greetings to you, my friend ✌🏼

[@Michael_CS615]

Does a beer on Sunday count?

[@demolitiondavedrillandblast]

Yeah, that is OK.

[@rexjames0015]

Not going to be much fun in the next few months as we go into the third extremely cold winter Dave.

[@demolitiondavedrillandblast]

Beam me up scotty!

[@rexjames0015]

@@demolitiondavedrillandblast You mean blow me up Scotty Dave?

[@jimsvideos7201]

I hope it wasn't too much time with your feet cold or wet or both.

[@demolitiondavedrillandblast]

It was a bit challenging.

[@TechGorilla1987]

G'Day! I'm happy to be first.

[@demolitiondavedrillandblast]

You win TG.

[@art1muz13]

I'm happy to be first, or 2nd?

[@keithmoore5306]

i see it turned wet and sloppy on ya Dave just the thing you want with ANFO!! do they still consider roos vermin like rabbits down there i know for a while they had guys hunting them to make dog food i think what they said they were using them for.

[@demolitiondavedrillandblast]

They are protected however in some areas they can be taken with a permit and the meat commonly available for human consumption in recent years.

[@keithmoore5306]

@@demolitiondavedrillandblast they've got them under control then! pity we can't do the same for politicians!!

[@labottegadisimonefrancesca2317]

Ciao Dave, mi piacerebbe lavorare con te.👍

[@demolitiondavedrillandblast]

Prego, vieni a fare dei buchi e faremo saltare in aria un po' di roba. Grazie per la visione. - You're welcome, come and drill some holes and we will blow up some stuff. Thanks for watching.

[@dennis2376]

Do the Kangaroos leave the area when you blast, it does not seem load enough to concern them. Thank you and have a great week.

[@demolitiondavedrillandblast]

They split as soon as I move onto the site and keep their distance.

[@dennis2376]

@@demolitiondavedrillandblast Cool seeing them though, thank you.

[@aquilaaudax6033]

✋🏼🇦🇺👍🏼

[@tehoro6893]

Do you ever have to stake accelerometers out on site perimeters in town? Y'know cause Karens

[@demolitiondavedrillandblast]

Yes, I have a Instantel Minimate.

[@paulbrowning8142]

You been causing earthquakes Dave?

[@demolitiondavedrillandblast]

Not at all Paul, I go to a lot of trouble to control the felt vibration.

[@chrispy104k]

Why don't these people just chuck a big pile of dirt on the block and plonk a house on top of it rather than digging that shit out? Site works must cost them about 50% of the build.

[@demolitiondavedrillandblast]

In the old days when homes were built on stumps they always did just that, the trend now is to level that site and lay a slab.