Blasting for underground storm water retention tanks

[@davec7076]

Thank you Dave! You do some very interesting work. I like that KZbin shows me content from before I subscribed a few years ago. Always good stuff, thanks!

[@demolitiondavedrillandblast]

My pleasure! I am glad you enjoy it. It's all here, 276 videos - www.youtube.com/@demolitiondavedrillandblast/videos

[@longlowdog]

The little boy in me thinks being a demolition man would be exciting, however the 55 year old head on these shoulders thinks even blowing things to smithereens could become a job after a while. Great video Dave. I'm sure it took a lot of putting together after some very long, miserably wet days. Thanks and regards from Scotland.

[@demolitiondavedrillandblast]

Well said, however the average weather where you live is probably worse than what I complain about Longlowdog.

[@longlowdog]

@@demolitiondavedrillandblast Hi Dave, yeah the weather is a wee bit different. We had a drought for 8 weeks and thought the world was coming to an end as we are so accustomed to looking at green fields. However, for us as least, as Billy Connolly said 'there's no such thing as bad weather, just a bad choice of clothes'. I own lots of waterproof gear and very few pairs of shorts.

[@davidhandyman7571]

Those zipper shots are poetry in motion. Great.

[@demolitiondavedrillandblast]

Glad you like them David.

[@TechGorilla1987]

@23:30 - I have worked on jaw crushers in quarries that could take that pile of rubble in one or two bites. Something with a pair of jaws weighing in at 13,000pounds/5900kg each just for the wear dies. There is nothing more satisfying that watching a jaw crusher make a boulder disappear with what appears to be minimal effort. I really, really enjoyed that.

[@demolitiondavedrillandblast]

Wow, all this rock may yet end up in a crusher. how long do the wear dies last when working with really hard rock?

[@TechGorilla1987]

@@demolitiondavedrillandblast Actually, the harder the rock, the easier it is to crush. The dies are manganese steel and they work harden over time. I imagine the dies could last a couple of years at least. We only replaced one set that large. It was the largest crane I have ever stood next to. We had to use larger than 1 inch/25mm carbon arc gouging wedges JUST to get the retainer bolts out of the top of the die while trying to stand on an extension ladder.

[@danbentsen]

Your a man of many skills, did not know you can operate an excavator. Like your rock blasting on roads videos the most, then again all your videos are good w/their different challenges. Thanks for the videos

[@demolitiondavedrillandblast]

Yeah, I'll operate sometimes. Thanks for watching and contributing.

[@Hirndille]

I wonder in which butcher's shop one can buy those boom sausages :)

[@davidmunro1469]

Thank you Dave. I really like the trench shots. You really gave the granite a good thump.

[@demolitiondavedrillandblast]

Thanks for watching David, I really have to be a bit conservative on this one as we have neighbors both sides.

It's alway fun to watch some bang ! With th e rain or cold it's a hard work, but it's so cool to blast so big rock !!! Thank you for the vidéo.

[@demolitiondavedrillandblast]

Thanks for watching again Stephane, lots more rain coming so more time for me to be at home editing video!

[@Mabsaabnab]

Thanks for the great video

[@demolitiondavedrillandblast]

Thank you and thanks for watching

[@thelamb288]

Wow. You have certainly got one hell of a job on your hands with this site 😄 . Cheers

[@demolitiondavedrillandblast]

Sure have, and more on the radar.

[@Tomhohenadel]

Always a pleasure to watch your videos. Love the way you blow things up, just seems to be a great stress reducer. Love watching a man enjoy his trade. Bloody good.

[@demolitiondavedrillandblast]

I do love it Tom. Thanks for watching.

[@Token_Civilian]

That blowed up real good...again...and again....and again...and again. Nice bulking on those shots. And to powder the one shot. 🙂

[@demolitiondavedrillandblast]

Real good it did I tell ya.

[@davidholder3207]

Git 'er done Dave. Some interesting blasts in this one.

[@demolitiondavedrillandblast]

Git'n it done Boss...

[@billraccio3835]

Good to see you back Dave, doing what you love playying with bangers!!!!

[@demolitiondavedrillandblast]

That's what I do.

[@MrLittlelud4]

A very interesting site, great banging there as usual.

[@demolitiondavedrillandblast]

Glad you enjoyed it.

[@allanharris4492]

I watch the ABC news on the internet and can’t believe the rain your getting. Surprised you get anything done. All the best

[@demolitiondavedrillandblast]

I'm really over it Allan, we had a good day today but took me more than 2 hours to get the mud and slop out of the holes that we drilled last week.

[@topnotchequipmentrepair]

Great looking PowerRoc you got there!

[@CaptainCheezmo]

That was a pretty impressive lift on the 45 hole shot around 34 minutes. I swear it's nearly double of most others I've seen on the channel.

[@demolitiondavedrillandblast]

Yeah, makes for easy digging.

[@leonmarut7092]

another good job dave thanks

[@demolitiondavedrillandblast]

You're very welcome Leon

[@General_Confusion]

Thats a proper drill you got there Dave, much bigger and you could have gone for oil.

[@demolitiondavedrillandblast]

Yeah, a ripper Atlas Copco T35

[@Zendukai]

Thanks Dave ! Always look forward to you bringing us along.

[@demolitiondavedrillandblast]

My pleasure!!

[@MrOlgrumpy]

Don't you love those "golden panda " products,designed to fail at the most inopportune times.Keep up the great work 👍🙃

[@demolitiondavedrillandblast]

Always!

[@westvirginiaridgewalker]

YES another demo Dave video! ❤

[@demolitiondavedrillandblast]

Lots more work on the job radar LH = more videos.

[@Je.Suis.Flaneur]

Looking at the ISEE page for the Errata of the 18th Blaster's Manual, I'm certainly glad you are up to date. Whew!

[@demolitiondavedrillandblast]

Excuse my ignorance but I don't have a copy to look up.

[@gregoryburton4328]

Awesome, thank you for letting us watch a pro at work 👍🙏

[@demolitiondavedrillandblast]

Our pleasure!

[@brucet8551]

a long job for you dave.who ever thought the tanks up probably didnt realise what a major job they could be thanks for the video.

[@demolitiondavedrillandblast]

Oh yeah, the one on the slope is more than 4 meters deep at the deep end!! Thanks for watching Bruce.

[@deconteesawyer5758]

After about a decade of drought and it finally rains cats and dogs, some bloke has the bright idea, maybe we should hang onto some of this stuff.

[@robertperren1684]

Oo a little snap Crackin Popples sounds good

[@demolitiondavedrillandblast]

Snap Crackle & Pop... I like that.

[@Michael-rg7mx]

We used the same method in Seattle. It would hold rain for awhile and slowly feed it into the storm water piping out to the sewage plant. Where they would take oil and sand out. Just some places used it. Usually long pieces of 10 foot concrete pipe anchored to beams. Don't want them to float when empty.

[@demolitiondavedrillandblast]

Interesting! I'm looking forward to seeing what goes in these holes, other paces I have seen concrete pipes like you describe.

[@nathanchalecki4842]

Even our home in new Zealand has a rainwater detention system as part of our water storage tanks. It just has a few thousand liters at the top that fills up in heavy events and slowly let's it out via an orifice to the drains...

[@scotthultin7769]

220👍's up demolition Dave thank you for sharing your experiences on the job

[@demolitiondavedrillandblast]

No problem, thanks for watching 👍

[@WHEELSRT7]

Another great project!

[@demolitiondavedrillandblast]

Glad you like it, yes it is a big one.

[@xuejiaoxu6778]

Another great video Dave thanks for posting

[@demolitiondavedrillandblast]

Glad you enjoyed it, thanks for watching.

[@ChrisB257]

Large and messy job site! Air blasting of some holes looked as though holes were super deep - like 4m (x35mm maybe) - wow. Irksome with the drill rod breakage. Retention tanks - heck - huge size, and two bites as well - looked a good result... pretty time consuming though as well. Other half showed a very impressive ''heave" :)

[@demolitiondavedrillandblast]

Yes some deep ones on this job Chris, one of the tanks was on sloping ground and we had to drill just over 4m (76mm diameter).

[@sighpocket5]

Nice!!!!!!

[@williamjacobs236]

Another great video Dave .

[@demolitiondavedrillandblast]

Glad you like them William.

[@bobjoncas2814]

good one. needed a bang to start my day...lol..keep safe and well

[@demolitiondavedrillandblast]

Best way to get started Bob.

[@bobjoncas2814]

@@demolitiondavedrillandblast ..HEH HEH...

[@tugboat2739]

Enjoyed it thanx for the video

[@demolitiondavedrillandblast]

Glad you enjoyed it Tugboat.

[@lafarms]

I suspect you must spend considerable time planning your layout. Enjoyed as always.

[@demolitiondavedrillandblast]

It's a bit more than just drill a hole and drop a banger in it, I have to make sure that I break it sufficiently without throwing it everywhere and keep the blast vibrations and noise to an acceptable level. Thanks for watching.

[@deconteesawyer5758]

@@demolitiondavedrillandblast And even when there are no neighbors to piss off and we are looking forward to the spectacular boom of an uncovered blast, the tree huggers show up.

[@jimsvideos7201]

Big job, nice to have that mongo drill to speed things along.

[@demolitiondavedrillandblast]

It sure is Jim, I got a few more jobs for it coming up also.

[@Green_House]

Spectacular! 💥👍

[@demolitiondavedrillandblast]

Thank you! Cheers!

[@simonfreer7950]

But Dave... the most important thing is did you get your drill back intact ?

[@demolitiondavedrillandblast]

We got it out and it is not bent from the blast, which is good, but we still have the snapped off shank adapter stuck in the top of it.

[@gth042]

@@demolitiondavedrillandblast I hope there's warranty on that stuff. It sounds like a machinist is a good buddy to have in that business.

[@kv501]

Good morning from Iowa, USA!!

[@demolitiondavedrillandblast]

Thanks for tuning in.

[@bobbaer869]

Great video Dave THANKS for sharing it. Have a great day and be safe out there. 👍👍

[@demolitiondavedrillandblast]

Thank you Bob, I will

[@RogowskiBubba0864]

Am I the only one smiling when a nice explosion happens?😊🤭

[@demolitiondavedrillandblast]

No Sir... I'm smiling also.

[@brianpatrick9480]

It never stops being impressive that the shockwave travels through the ground before the gas expansion lifts the dirt

[@demolitiondavedrillandblast]

What is even more startling is when you fire a huge shot from a long way off and the noise conducted through the ground reaches you before the sound through the air.

[@brianpatrick9480]

You have to have one of the best jobs in the world

[@markfoster6110]

Just love it

[@demolitiondavedrillandblast]

Thanks Mark.

[@kevdimo6459]

I’ve seen these tank’s before Dave, they can be very troublesome at times. I know it’s not your problem but who has to maintain them. I bet it’s not the Engineer who designed them. Anyway it’s great viewing for us, i love it when you really smoke that granite into dust.

[@demolitiondavedrillandblast]

I hear you Kev, there does not seem to be any access to clean them out should they silt up.

[@markfryer9880]

@@demolitiondavedrillandblast Oh no, that is just asking for trouble further down the line. Probably didn't want any civilians try to access the tanks and getting killed by bad air in a confined space situation.

[@scruffy6151]

Just made a comment on your post that the video would coming soon and just got the notification.

[@demolitiondavedrillandblast]

Excellent!

[@markfryer9880]

Dave, I finally ran into the guy from work and asked him about your GVM question and he said to check out Guests 4x4. There are also at least two mobs in Au that do 6x6 and 6x4 to off road vehicles and uprated GVM, so that might be a consideration, but it would depend upon your budget. Mark

[@jamespurssey1393]

Awesome work as usual Dave. Would love to be a part of it some day

[@demolitiondavedrillandblast]

There is lots on the job radar James, how did you go with the underground adventure?

[@demolitiondavedrillandblast]

One day you will post some video.

[@Dan_Hall]

At 33 mins in the video I see you using the "eastwood bundle" for a booster charge for the bagged ANFO. Was the "eastwood bundle" cheaper to use than a cast booster?

[@demolitiondavedrillandblast]

3x 32mm plugs is slightly cheaper Dan, I chose this option as it is larger diameter and better couples to the large hole size, It does have one potential disadvantage though in that like all sensitized emulsion explosives it can be subject to dynamic desensitization problems in some conditions.

[@DFPercush]

Man, I thought you were drilling little 4 foot holes, but then you pulled that air blower out, and pulled, and pulled, and pulled, lol. That's quite a job. 80 hole blast, too bad it had to be covered. :P

[@demolitiondavedrillandblast]

I'm glad that they are not any deeper as lifting that pipe in and out is a work out!

[@jwaterous224]

Seems like the ground was moving like chocolate Jell-O! What a sight even if it's for only a split second! Anyway glad your tool got recovered okay; next stop a machinist? Cheers from Minnesota!

[@demolitiondavedrillandblast]

Ben thinks he will be able to get it out.

[@grstrom1]

Really great video! Lots of blasting. Loved it!!

[@demolitiondavedrillandblast]

Glad you enjoyed it Glen.

[@TechGorilla1987]

@10:47 - "Just like a center-pull opener - zipper." I love hearing other ways of describing everyday items. I find myself using some of them which kind of makes the not-so-bright folks get a confused look on their face.

[@stillwater62]

There be whales here! The slow-motion section of the video, at about 31:28, had the sound of whale songs, then the long exhaust from the stuck drill rod looked like a whale blow. It sure is a muddy mess where you are having to work, AND, you still look good running that excavator, just like you have been doing it all of your life. I am glad business is going well for you and there seems to be plenty of rock that needs the attention that only Dave knows how to give. Be safe, be careful, and make sure you always go home at the end of the day. Cheers.

[@demolitiondavedrillandblast]

Hahaha... the whale song is birds squawking at 12.5% normal speed. Thanks #62.

[@paulcooper2897]

Great content as always!!! Thanks for sharing 🇨🇦

[@demolitiondavedrillandblast]

Our pleasure! Thanks for watching Paul

[@NOTINTERCEPTER01]

Who needs an earth and rock mover with you about Dave lol

[@melin1969]

im guessing the water retention tanks are for some kind of green house or self sufficency house ? like to hook up to a sprinkler system or toilet flush to reduce mains water usage and bills maybe

[@demolitiondavedrillandblast]

Hi Joe, no, the tank is just there as a surge buffer to prevent overloading of the local storm water system in the event of a really heavy rain - another manifestation of climate change alarmism.

[@RolandElliottFirstG]

Been getting the same rain up here in Sydney, mud, water everywhere the rock is fine, it just gets damp. Golden chinesium wheel wearings, interesting, guaranteed to last 35 killometers or 6 hours, also stated on the chinesium written installation instructions , " we hold no responsobility for damge to your vehicle, loss of life and everything else you can think of".

[@demolitiondavedrillandblast]

I am so over it Roland, we have a shocker forecast for today.

[@Monkeysic]

Got to love all the new regulations. Friend built a house here a few years back and because he wanted his driveway paved the township made him put a 10k dollar water retention tank in and run all his down spouts to it. 10k for a hole with 2 feet of 2B and a concrete poop tank with no bottom in it. What a money racket. The Chesapeake Bay foundation has more authority then the authorities.

[@demolitiondavedrillandblast]

seems like an overkill to me Thomas.

[@ccritter9428]

It’s crazy the amount of blasting required to develop land there, not to mention the water retention tank requirement.

[@demolitiondavedrillandblast]

Oh yeah, to me it seems like the tank requirement is a bit over the top.

[@ccritter9428]

@@demolitiondavedrillandblast well it looks like ass busting work….hope you are well compensated! I was also pleasantly surprised to see you operating the digger. I would have thought there was a union rule preventing you from taking the controls?

[@ЕвгенийЧиняков-ц8я]

Хорошая работа!

[@demolitiondavedrillandblast]

Спасибо, ставьте лайк и подписывайтесь, на этом канале вы найдете более 240 взрывных видео.

[@Goalsplus]

We have soakwells to keep the rain water inside the property in Perth. They are a lot smaller than the ones you were blasting for and you can dig many of them out with a hand shovel in the sandy soil. Yeah big lack of demand for your type of work over here.

[@demolitiondavedrillandblast]

Yes, I have heard that about Perth, do you have a deep augured hole with some kind of liner to stop it falling in or something like a septic leach field?

[@Goalsplus]

@@demolitiondavedrillandblast basically big barrels with holes in them. They stop the rush of water long enough to allow it to soak into the sand around it, which is very fast. When I moved here I was surprised to find after a day of heavy rain there are no puddles or mud.

[@demolitiondavedrillandblast]

I like the no mud!

[@Goalsplus]

@@demolitiondavedrillandblast yeah, it's different alright.

[@Dan_Hall]

Love the new BIG drill rig. Is that a new addition or a rental?

[@demolitiondavedrillandblast]

This is Ben's machine, he normally drills holes for ground anchors etc. this is a novelty for him.

[@blasterwayne6]

Is that a cocpo F9? Nice looking rig... I like the yellow beasts, in my opinion copco/epiroc are the Cadillacs of he industry

[@demolitiondavedrillandblast]

It's a T35 Wayne.

[@robertperren1684]

Underwater Storage tank is it deep enough a big enough for it

[@demolitiondavedrillandblast]

These things are huge Robert, 20m long and 3.5m wide hole.

[@chriscooper654]

Meticulous as ever. Amazing, realizing the force needed to kick so many tons of soil up like that and shatter the hard rock beneath. Stay well, Dave.

[@demolitiondavedrillandblast]

Thanks for watching Chris.

[@TechGorilla1987]

@7:54 - Did your pointing stick turn up missing today? :)

[@demolitiondavedrillandblast]

Correct! got a new one now.

[@TechGorilla1987]

OY!!! Where ya been, mate?! I hope you been happy, healthy, busy and explosive.

[@demolitiondavedrillandblast]

I been looking out the window at the rain far too often lately TG

[@awhtjio]

That was a lot of boom for the water retention tank. Hope you didn't have any jobs on the go this week, would've turned into swimming pools in this rain.

[@demolitiondavedrillandblast]

Tell me about it, will find out on Monday, had some big holes drilled that are probably full of mud.

[@bbrachman]

Question: Drilling holes. You need two drill shafts to get down to depth. How do you get the first one out of the hole? Does the second lock into the first on and grabs it to pull it out?

[@demolitiondavedrillandblast]

Hi Bruce, there a 2 ways of doing this, when using a hand drill you start with a 600mm rod, when down to depth you pull it out, and drop in a 1200mm rod and so on, I have rods 4.5m long for the hand drill. When using the drill rig as in this video, the rods have a male thread on the bottom end and a female thread on top end and the rig has a carousel of about 6 rods and an auto handling system to load them and retrieve them.

[@bbrachman]

@@demolitiondavedrillandblast I get it. You start with a 600mm rod. To get the hole started and straight. The remove it and go in with a deeper drill. I couldn't get that action from most of the videos. They are fun to watch. Love the excavator 'finger' . Just like the ripper on a big dozer. (I watch gold mining programs)

[@jwdickinson643]

Dave, when you load/charge the drill holes, do you ever get the inkling to add slighty more ampho? for example, if the material, hole diameter & depth call for 500 grams do you say to yourself “self, shag it, Imma gonna add 250 grams more just to be sure.”?

[@demolitiondavedrillandblast]

He he... not on this job though.

[@jwdickinson643]

@@demolitiondavedrillandblast 😁😁🤣🤣

[@TalRohan]

just wondering why you don't use anfo with all granite. I know anfo is a slow burn big mover...so is it simply that bedrock granite is too strong?

[@demolitiondavedrillandblast]

The long pink sausages that I'm dropping down the holes are anfo inside a 2 inch plastic tube to keep it dry in these wet holes.

[@art1muz13]

Enjoyed it, mate! I love your videos, thanx for the videos. At 31:37ISH, why was that pipe steaming?

[@demolitiondavedrillandblast]

That was all of the blast gasses escaping around the drill rod that was stuck.

[@rockman531]

Hi Dave, INCREDIBLE!!! Amazing video! Lots of hard work went into this job! It's been a while since I've seen you use those 1 meter sausages! They work great! Do you need any extra permits to be hauling such a large quantity for one days blasting? Just curious. Did you get your 4 meter drill rod & bit back in useable condition? Who was that lady that jumped into the trench about 1/2 way through the video?? Looking forward to part 2! Stay safe!! Take Care, Jim

[@demolitiondavedrillandblast]

Glad you liked it Jim, there is a limit on my transport, hence the tank holes being blasted in two shots, the long drill rod came out strait but we have not been able to get the snapped off shank adapter out yet... The young lady is Renee - she is part of the sewer crew.

[@deconteesawyer5758]

@@demolitiondavedrillandblast Having her in the trench on new pipe likely beats what the crew doing sewer unblocking deals with.

[@johngriffin618]

I love your videos. I need to blast a retention pond for some livestock in limestone (US, we are allowed to use binary w/out license). Have you ever done any limestone? Does it perform similar to granite? Any suggestions for resources I can use to calculate the needed binary and spacing?

[@demolitiondavedrillandblast]

Hi John, don't think I have done any limestone (??) none in the local area, I assume your binary is ANNM, that will do the trick nicely, probably a good idea to engage somebody with local blasting experience I think.

[@TechGorilla1987]

@30:13 - Whats the price on that drill rod? I did a little searching and when the results don't return a price but give you a "Get Quote" button, you know it's pretty expensive.

[@demolitiondavedrillandblast]

This was a budget brand rod, 4.3m T51 speed rod - just short of AU $1000 and about $300 for the drill head.

[@alfadoofus]

Wow this is a big job . Nice video on this one Dave I think you are out doing yourself. I can't wait for the next one . what was that eerie sound on the blast with the stuck bit ?

[@demolitiondavedrillandblast]

The gas exiting the hole just went shhhhhhhh... the other sound was a bird squawking in slo-mo I think.

[@HawksofOz]

@@demolitiondavedrillandblast I thought it was a drop bear claiming another victim.....

[@demolitiondavedrillandblast]

@Hawks of Oz Shhhh... you will scare off all of the tourists.

[@markfryer9880]

@@demolitiondavedrillandblast A dab of Vegemite behind both ears of tourists who you care about will keep away the Dropbears!

[@grumpyg9350]

21:28 wow. thar she blows.👍👍❤️👏🏻👏🏻

[@demolitiondavedrillandblast]

Sure did!

[@karlrobbers]

I understand the reasons for covering the blast with soil - dust, fly rock, noise and smoke mitigation, but doesn't it make it impossible to spot any misfires before the excavator starts disturbing the pile? I know Nonel dets are reliable and pretty forgiving, but it must add another element of complication compared to the old blast mats used in days gone by.

[@demolitiondavedrillandblast]

Yes, to some extent. There is a handy little work around for this that I usually use. From the last hole in the sequence or from the end of each echelon row, run a piece of shock tube out from under the cover, over the open end of the tube place a piece of electrical insulation tape, when the shot fires the shock wave will punch a hole though the tape over the end of the tube and confirm that the signal tube has propagated all of the way to the last hole(s). This provides reassurance against the most likely cause of failure - damage to the tubes while covering. I call this a witness tube as it bears witness to the shot propagating all of the way to the end. Granted that it does not show up a down hole misfire, this is quite rare when you have done everything correct, however occasionally it does happen and almost always it is not the fault of the detonator but a dynamic desensitization misfire because of the emulsion explosive being damaged by the firing of an adjacent hole, almost always when working in wet, broken ground with close hole spacing. This is why it is important for the shot firer to supervise the dig out to be watching for any un exploded stuff in the muck pile or be ready to investigate when the rock that should be broken and it is not. Thanks for watching. Sorry about the slow response, been busy blowing stuff up!

[@demolitiondavedrillandblast]

You are obviously "in the job" please post some blast video.

[@karlrobbers]

@@demolitiondavedrillandblast I worked alongside the Shotfirer (we changed contracts before I had the chance to do my shotfirers ticket, so I only had a responsible worker's ticket) on charge up and did re-entries when I worked underground a few years ago. Given the speed that the faces got charged at - always a rush at end of shift - it's a wonder we didn't get more misfires than the occasional few that we did. When they did occur, it was usually right up in the shoulder of the face or less commonly in one of the lifters. I never wotked on stope charging, but I would love to have had the chance as that would have introduced me to Ikon detonators. Love your channel.

[@Dan_Hall]

At about 17 min in the video you use some long bags of ANFO (due to wet holes). Calculating charge weight with package explosives is easy. How do you calculate explosive charge weight with granular ANFO? I'm guessing you made these bagged charges up yourself.

[@demolitiondavedrillandblast]

I know that the 51mm lay flat holds 1.67 Kg / Meter or if pouring direct in the hole I know that my 1 Litre measuring jug holds 820 grams. Yes, I make these lay flat anfo bags.

[@arjones57]

What do you do with the rock you pull out?

[@demolitiondavedrillandblast]

Final destination unknown, just stacking it up for now.

[@TechGorilla1987]

@13:30 - You know you blasted it good when you need a screen deck instead of a ripper tooth to get the spoils out.

[@demolitiondavedrillandblast]

You got it TG, the biggest concern is that when you really belt the decomposed granite it just turns to sand and the customer does not get to see a huge pile of rock that you can point to as justification for the corresponding bill.

[@skeets6060]

What are you stemming the holes with ?

[@demolitiondavedrillandblast]

10mm screened, hard, sharp, crushed rock. 76mm (3 Inch) holes.

[@Dan_Hall]

Firing pattern seen at 19 minutes, etc?

[@demolitiondavedrillandblast]

This hookup pattern is called control row and reverse echelon, where the control row delay clips are 17ms and the echelon delay clips are all 42ms. This gets it all going very quickly with no holes time spaced closer than 9ms - the critical number for vibration control.

[@ferstuck37]

Dave! good music,Can you tell me do you use the same explosive for all the different types of rock you come across, or for instance if you had hard granite will you use another kind of explosive. If you were shaving an outcrop of rock from a rock face would you need specialized explosive. :)

[@demolitiondavedrillandblast]

Good questions #37, rule of thumb is that Explosives with a higher velocity of detonation work better in very hard rock. If you were doing a job like the one in this video - kzbin.info/www/bejne/jXTchmODd9OBmLM or this one - kzbin.info/www/bejne/aaKkcn1noK-MZ5I you would use an explosive that is long and thin to spread the energy evenly.

[@stephencoster9532]

Hiya Dave, Another great video; thank you. Was that your new tracked drill? What a beaut! You took a lot of rock out of each hole. Well done for a job well done. Stay safe, Steve...

[@demolitiondavedrillandblast]

Thanks Stephen, the T35 drill belongs to Ben. - You will be seeing more of it.

[@Gromo_Z]

Why without a protective helmet in the excavator work area?

[@markjarvis1600]

Hi Dave, when misfires occure, do you reverse fire using the telatail?

[@demolitiondavedrillandblast]

The system is not bi directional when using Nonel shock tube initiation, if you were to use det cord you could though.

[@TechGorilla1987]

@@demolitiondavedrillandblast Not much really surprises me, but this fact had me scratching my head. I hadn't a clue that those shock tubes were one way only. I just assumed that the flame front would propagate in either direction from the initiation point. Now, my head is trying to process that tube actually spitting the flame front forward from one end to the other in all one direction. Mind blown. It's another reason that I watch stuff where I can learn. I'll be pondering this for the rest of the day. Mission accomplished DD.

[@TechGorilla1987]

Excellent question, sir!

[@demolitiondavedrillandblast]

@Tech Gorilla - the tube is bi directional but the delay clips on the end of the tubes, at the top of each hole will not work backward.

[@randalljames1]

at 35:19 was that a charge?

[@demolitiondavedrillandblast]

No, that was a short length of broken white PVC pipe.

[@jasethesmiff5683]

Like concrete, ppl just dont understand why its just not a case of 'Laying conc'.... or 'Just blow it up'. My wife n i will be over early next year. Will pop in n hopefully catch up with ya. Now to find my scuba gear....it be raining

[@demolitiondavedrillandblast]

You said that a year ago... hahaha.

[@jasethesmiff5683]

@@demolitiondavedrillandblast biggest floods on record. Yikes

[@robertkuipers9422]

What happens with the rock dave.does it go off tobe jaw crushed ?😊

[@demolitiondavedrillandblast]

No decision on this lot yet Robert

[@tda2806]

Rock disassembly at it's very best. Has NASA contacted you about joining their asteroid removal team?

[@henrydisbrowe6704]

Did u or didn’t you get the bit and rod back

[@demolitiondavedrillandblast]

Yes, we got it out without any bends in it, now we just have to extract the snapped of shank adapter from the female thread in the top end.

[@vsvnrg3263]

golden panda wheel bearing? dave, dont tell me you intentionally installed a less than optimal bearing. recently i needed a bearing for a power tool and found that the size i needed was the same as what was in a fidget spinner i had. what a coincidence. of course i went and bought a quality replacement. golden panda, lol! does golden panda make drilling equipment too?

[@demolitiondavedrillandblast]

Yeah.... it was in the machine when I got it, have to give it credit that it has lasted a long time. Golden Panda make absolutely everything and they make it so cheap that many of the good brands have shut down shop and no longer make the good gear. Sad really

[@vsvnrg3263]

@@demolitiondavedrillandblast , oh, okay. because you knew the brand name of a wheel bearing, i thought you may have been responsible for choosing a no-name brand over a respected brand which did seem out of character for you who understands the importance of quality products for your livelihood. any trailer that has a compressor on it is going to cop some rough use

[@demolitiondavedrillandblast]

@vsv nrg I did not actually fix it, It had to go home on the back of a tilt tray truck and it was only a short distance to the machinery dealer where I purchased it - this guy is very good and does a lot of work for me, as apposed to being a long and expensive trip back to my place. So it went to the brightest compressor technicians around these parts. I knew they also had a dead unit similar to this one in the yard so spare stub axle would also be available if required. Funny thing was that he had had a shot at me for fitting the "YumCha" brand bearing, It was in it when I bought it from you I said. If I have to buy a bearing it will be a good brand. Love that Rillers Critter.

[@vsvnrg3263]

@@demolitiondavedrillandblast , ha ha ha. as per your last sentence, so do i. thats why i use it. what do you think it is?

[@geraldarthurhall2247]

Are you sure that wasn't an ancient underground megalithic structure under there?

[@demolitiondavedrillandblast]

100% sure.

[@keith0alan]

I have seen drill rods stuck in hard rock at mines still there 100+ years later.

[@demolitiondavedrillandblast]

As a permanent monument to their blunder...

[@Wilbargosh]

I guess council sets a condition for underground retention tanks and no one considers the effort to remove the rock nor the future cost of removing the accumulated debris sludge from inside a confined space!

[@demolitiondavedrillandblast]

Exactly Paul.

[@craigsowers8456]

This Texan finally figured out why there are no "Rednecks" down under ... "Tammin Hats" ... LOL Great job on the blasting ... still have the wooden side of a crate of Dynamite from my Grandfather's "Gold Mining" days 100 years ago ... "Apache Powder Company" ... and he didn't have skid steer driller ... HA

[@craigsowers8456]

P.S. ... were you able to extract your drill rod? Notices a lot of dust coming out from that particular hole ... hope so !

[@demolitiondavedrillandblast]

Yes, got it out and t-it was still strait.

[@mattbolton8230]

Doreen ?

[@demolitiondavedrillandblast]

No... Doreen is all Basalt territory.