Blasting rock in road works 

Couldn't agree more!

Aw thanks Scruffy old Pal.

Nah... these guys are best - ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-upLV57NVhig.html

Correct Kevin, using hole inclination and timing you can pretty much send the rock in the direction of choice

Even the rocks here north of the border are looking worried ...

Thanks for watching Timothy.

Try telling that to his rock drill and compressor.

@@markfryer9880 Or his Big Stick ... I can just hear it saying "Oh no, not again!"

Thanks for watching 534, few people realise how much upkeep against erosion etc. is required for seldom used forest roads, most of these roads started life as log tracks and now serve as fire access roads and as such they must be ready to carry heavy vehicles at any time.

Thanks for watching Ken, This is a good one for me to show the earth moving guys that I work with when they say "do we really need to put all that dirt over it"

@@demolitiondavedrillandblast The short answer to them is Bloody Oath you do! Unless they are offering to catch any flying rock before it hits something important and or expensive.

Exactly!

Thanks for watching, slo-mo videos made on my DJI Osmo Action Camera - like a GoPro but better and cheaper.

Thanks for watching KV

Yeah, home site cut today and big pool next week

Yep!

Thanks for watching Cormac.

Thank you.

This one is an Indian made copy of an Atlas Copco RH658 - they are a really good drill, I have one on a leg also.

I'll be showing this video to earth moving contractor that whine about having to cover the shots.

@@demolitiondavedrillandblast lol ❤️😁xx

It's rather rough on the neighbors houses and cars. Not to mention the poor puppies in the back yard

The fun part only goes for a very short time.

Thanks Travis.

Thanks for coming Mark

Thanks Steve, I'm learning as I go, I recently transitioned to Premier Pro (good move). Always looking for new ideas.

Yeah, and even better if you don't have to clean up after yourself! 😊

And he gets paid to do it.

Yeah, me too, this little camera does 240 frames per second, I'm hoping to be able to get my hands on a 1000 FPS camera somewhere down the track.

@@demolitiondavedrillandblast wow

They well knew what to expect.

Thanks for watching Stephen

They are very brave, especially the slomo camera, because the lens sees such a wide angle it looks a lot further away than it really is.

@@demolitiondavedrillandblast do they get rewards for being especially brave, like a bronze star, or some duct tape? (gaffers tape?)

Thanks for tuning in Tom.

All "free range" rock in this production.

@@demolitiondavedrillandblast I think your tripod should get danger pay!

Thanks for watching, more than 100 more for your viewing pleasure, please like and subscribe.

Thanks for watching Alan.

Yeah... cracked another front screen on Osmo #1 yesterday, The guy was using a breaker on the excavator and the camera was too close and was hit by a fast moving stone chip. The main issue is because the lens is such a wide field of view, everything looks a long way off so I have to put it very close to the action.

The road was closed both ends Geoff, thanks for watching

Most of the greens are red on the inside and I don't care too much for them

Yeah... might be able to do something like that although often I don't get to see the end result.

Thanks for watching Nick, please like and subscribe, more than 100 other videos on my channel

Easiest entry point would be underground mining, the pay is good. Entry into my kind of blasting is near impossible unless your born into a family business as nobody will give you work without being able to prove a lot of experience and you won't be able to get public liability insurance without a long track record of safe work. You could gain some experience by labouring as a driller.

Hi Joe, took me a while to re find this video, this is the best explanation that I can find on how we got all these rounded edge rocks - ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-nFcTCtNWr5Y.html

Clothing is BYO, thanks for watching.

Thanks for watching, have a look around my channel

Thanks for watching!

Thanks for watching Jim, it takes very little time to set up the cameras... but ages editing

I have been helping Paul again... video coming soon.

Thanks for getting on board James. OK thanks for asking, if you are regularly working with stone dust, especially hard igneous rocks that contain a lot of silica, you need several levels of protection if you want to live a long time, you need to treat this stuff like it is asbestos. The only reason that there is a contractor vacancy in my area is because the last guy died of silicosis in his 40's after a failed heart / lung transplant, and he always used a mask they tell me, but he was evidently not very good at managing the secondary exposure risks. So rule number one suck up and capture as much as you can.

42mS.

Thanks for watching

I don't think that you would want to be using the expanding variety in case it placed pressure upon the explosives down in the bore hole. The idea of a more secure cap to the holes does merit investigation.

I believe cement does work well, but if you should need to remove it, e.g. to treat a misfire, then you have a problem. Many of the holes in this video shoot their stemming because the hole is just too short for the stemming to work effectively - the short holes only have around 13 hole diameters stemming length, a good starting point in blast design is 25 times the hole diameter.

My favourite type Pat!

The Bush = The forest, the scrub etc. Thanks for watching

@@demolitiondavedrillandblast Indeed. Here was me imagining miles of dried up scrub with scabby 'roos everywhere & the odd sheep/koala. A mate of mine in Sydney who also watches your channel has just been very rude about Victoria, or "Leper Land" as he called it. Stay safe & pox free matey - love your stuff & how you present it.

I find a lot of evidence of failed attempts to break the rocks with hydraulic hammers and 4 times now I have found blast holes of people that have come before me, that's where it gets interesting, one time with wires coming out of the hole... Another very good reason to clean it up and have a good look before you start drilling!

Yes and no, shaped charges on rock is very wasteful in that you need a much much larger mass of explosives and in most cases the noise is prohibitive. This method is sometimes used to quickly clear large boulders that have blocked a road etc.

I agree.

Actually Dave should consider putting a watermark logo somewhere all through his videos to help prevent any video pirates from swiping any video that might go viral. Harder to argue ownership after the horse has bolted.

@@markfryer9880 Actually Mark, RU-vid does a pretty good job of notify me when this happens.

Only one complete loss, a few grazes.

Naw, he just added some, although it was a wee bit larger in size! 😊

Thanks Mark, I can't tell you off the top of my head as most of the music I use comes from only 3 or 4 artists... but not this one, I'll have to fire up the other PC and dig up the Premier Pro file and have a look.

It has been my preferred method for a long time now, however it had been law since December.

Victoria

Gracias mi amigo

Me too.

Given just how bloody big this country is, Dave won't ever run out of rock to blow up.

We have this really really big rock smack bang in the middle of Australia that I have my eye on.

@@demolitiondavedrillandblast now now Dave landmarks are off limit but, it would be nice to it blow lol.

@@scruffy6151 That big rock is off limits to all white fellas now and we are no longer allowed to climb it.

@@demolitiondavedrillandblast well then might as well make it alot smaller lol.

Thanks for watching Richard, more than 120 videos to chose from.

Oh yeah.

I am sure there are alot of adults also.

@@scruffy6151 Guilty as Charged.

These are what is known as shock tube or "Nonel" (non electric) detonators, they come with set lengths of shock tube attached to the det. The two pops per hole, first pop is the surface delay clip firing, these connect it all together and set the order in which the holes fire and time delay between holes, second pop is the main charge down the hole firing 400ms after the surface delay clip fires. The shock tube is a thin plastic tube that has an explosive coating on the inside that is not strong enough to damage the tube but only strong enough to carry a shock wave along the tube. These are a lot safer to handle and use that the older style electric detonators.

@@demolitiondavedrillandblast is that because the olde one could self detonate because they were nitro cellulose or something like that? Are you noticing alot more views lately? Lastly could you please show more of the boulder/rock clean-up? Even if it's time sequenced.

The detonators used here have a 400ms in hole delay, the reason behind this is so that you can fire a number of holes in quick sequence and not be concerned about rock movement cutting off the signal tube or wires in an adjacent hole, this may still happen but it is no longer a show stopper because the detonator in this hole has already been initiated and the 400ms timer is counting down to fire.

@@demolitiondavedrillandblast ah so thats why! Cheers mate! Bloody good fun watching you work leaving me more and more impressed on how precise the cuts are, like "The Squeese". All the best wishes from cold and wet Norway! 🇳🇴

Some of these were instant det cord shots and some with nonel delays, mix of timing, 17, 25, 42ms.

Thanks for watching Michael, yes this job used all non electric or shock tube dets, I would usually use cord for this type of work but there were a few homes near enough to be annoyed by the extra noise of cord.

@@demolitiondavedrillandblast Thanks for explaining. I'm really curious of what components you use and why you choose them. Back in the early 80's I trained for explosives but it was very limited. 2 caps, electric or fuse. One det cord. C4 or dynamite. Not a lot of choices.

You join the ranks of "Blast mat Bob" and "Detonator Dan"

@@demolitiondavedrillandblast Greatest Hard Rock Band ever...

@Roger Rarebit yeah. I was drunk.

@@AlexJBaldwin Bit like getting a tattoo when you are drunk and you get it wrong. You're stuck with AmPho Alex. Sorry mate! ;-)

In this case it was used to line a creek edge at the under road culvert site to prevent erosion.

Well, can't say that is true in every case, I love my work but it is very physical and I go home at the end of most days fairly knackered - I don't have any trouble sleeping at night. Thanks for watching Dave.

Maybe you would have a sacrificial camera that I can use???

@@demolitiondavedrillandblast That camera is continuing with the theme of _2019: The Year Of Living Dangerously_ - the tripod took a hit around 7:04, and looking at the trajectory of some fragments at 15:22 I was amazed it survived!

Hi Ben, Mostly the same loads, some of them a little bit hotter ~20%. The dirt does a pretty good job of moderating the blast hey! Something else worth consideration is the the rock needs considerably less explosive to break it when it is not covered as much of the blast energy in the compression wave is dissipated into the soil cover where as when the rock is not covered, a lot of this energy is reflected back as a tension wave which ads to the destruction. Kind of like an impedance mismatch causing a high VSWR

@@demolitiondavedrillandblast now that's really fascinating! So basically the surface of the bare rock has such a drastic refractive index change from rock to air that the shock wave reflects back, but dirt cover lets the energy escape better, like putting a radiating load on the end of coax? (mixing comparisons lol) I would have expected the weight and compressible mass of the dirt to absorb energy and counter the outward push of the shockwave, but the concept of the internal reflected energy is new and very interesting to me! And I also find it interesting that you seem to also know about radio. Lol But I guess that's not surprising considering your obvious technical aptitude!

@@ke6gwf You've got it, first trade was radio tech. -.- . -.... --. .-- ..-. / -.. . / ...- -.- ...-- -.- -.-. -..-

@@demolitiondavedrillandblast -. . ...- . .-. / .-.. . .- .-. -. . -.. / -- --- .-. ... . --..-- / -... ..- - / .. / -.- -. --- .-- / --. --- --- --. .-.. . -.-.-- / .-.. --- .-.. ;)

Got it stuck in a tree on this job... good thing I'm pretty good at climbing trees.

It is a very blokey thing, my viewer statistics tell all, female viewers are

Bruce I watched a opal mining video a couple of years ago and they do use a machine a bit like a Dingo but fitted with a horizontal rotating drum which has diamond pick points mounted to it. The machine can be used to cut full height passage ways to follow the opal vein lines or to create underground rooms. I think it was powered by a small diesel engine with a small flexible exhaust hose running up to the surface. JCB have recently introduced a range of battery powered equipment designed for confined space working that could also be very useful for working underground.

Hi Bruce, the Brokk and Husqvarna range of remote control demolition robots could be good for this as you can operate them from a safe distance and they are electric

@@markfryer9880 Thanks. It's great to hear of these things and I am not just off in fantasy land. JCB are good gear anyway and full electric for confined spaces makes the workplace even better

Yeah, I'm also surprised that they survived, the DJI Osmo action camera is a small target and looks like it is made to take some rough handling, the Sony Handicam is quite vulnerable though

Exactly.

As Bachman-Turner Overdrive once said, "You Ain't Seen Nothing Yet"

Thanks for watching Bob, we also use Forrest, don't use "the woods" much but have other terms like "out in the scrub" - usually used for Malle bushland and also "out in the sticks"

There would have been more drone video on this one but it got stuck in a tree and I had to climb up and shake it out, as a result it sustained a small amount of damage.

The fastest rock is the small size stemming rock that gets ejected out the top of the hole sometimes, when this happens and you are using blast mats it just shreds the rubber mats and goes strait through! One way to protect your blast mats is to cover the holes with a thick square steel plate but these also get badly bent over time.

Never really tried that Bruce, I have heard that some people believe that every hole should be filled right to the top... maybe I should try that some day when I have a very large buffer zone.

Over charging a hole is not and a good thing trust me ask me how i know.

Dave's paying by the KG for the supplies, so using less affects the bottom line. I'm guessing s long as a machine can come through move the bits, then the contract is deemed fulfilled and thus billable.

Scruffy 61 Personal experience, I’m guessing?

@@realaussiemale567 yep.

This was safe, the road was blocked both ends, everybody was notified and well clear.

Where is Store Creek?

@@demolitiondavedrillandblast In East Gippy, about 20k NE of Bairnsdale. Great video by the way mate!

"No trees or cameras were harmed in the making of this video"... well almost, the drone got a dislocated gimble and damaged flex strip when it tried to give a tree a hair cut.

I often do, check some of my other videos Bushy

:-)

Sadly no.