60 meters underground! Stone mining process! Oya Stone in Japan

[@cappa1976]

栃木県宇都宮市生まれ育ちです。実家が石材業だったのもあり、大谷石の掘削作業やらを見学した記憶もあります。私にとってとても懐かしい、そして今も続く長い伝統。 大谷石は大谷地区だけでなく、掘れば多分中心市街地からも出て来ます。

[@abasskurdi]

جهد كبير من رجال مخلصين الف تحية لكم من العراق بلاد مابين النهرين بلد الحضارة التي اهلكته الحروب اتمنى ان نكون يوما مثلكم ❤❤❤❤

[@Yukihuru]

素晴らしい動画でした。 観光エリアは行きましたが稼働エリアの見学も可能だとは知らず、こちらも興味がそそられますね。 現地のスケールは映像で見るのと自分の目で見るのでは全く違いますし、坑内の独特な冷気や壁面に見る掘削痕の独特な模様は古代遺跡の壁画の様でした。 また訪れたいスポットですね。

[@user-dg8vr]

県左官組合の研修旅行で連れてってもらった事があります。 真夏なのに穴の中はめっちゃ寒かった記憶がある。 そして見た事がない世界。 広さにビビった。

[@bazra19]

Thank you excellent documentary. Thank you for not putting music over the Video.

[@neo-kq9xk]

貴重な良い映像。現場も理路整然としててきれいで素晴らしい。 昔はカイジの地下労働みたいな感じだったかもしれないけどｗ

[@わさんぼん-f9v]

記念館で一般開放されているエリアとは別で、この撮影がされている現在掘っているエリアに入ったことがあります。 下に降りる階段が木で作られていて、地下水で滑りそうになりながら慎重に下りて行ったのが良い思い出です。 震災から1年ちょっと経った後に1度だけ事前申し込みを見かけて参加しましたが、今でもやってるのかな・・・？

[@pogyutann]

見学は受付けているか知りませんが、概要欄には現在も稼働中と書いてありますね。

[@co-chin2759]

今でも採掘してるんですね👍

[@猫サムライ-j8e]

大谷石で出来た蔵が庭にあったな。 栃木は大谷石の塀とか多い。

[@rupertmiller9690]

Cleanest active mine site I have ever seen.

[@mmercier0921]

even their rock quarries are clean and organized.

[@LiberJP]

もう10年､いや15年以上前になるか､大谷資料館で公開している昔の石切り場なら見てきたことがあるけど､ たしかにこんなかんじの壁の模様があったなぁと思い出した あの模様はこうやって定尺での切り出しを繰り返すことで生まれるんですね

[@泰-q3g]

御安全に。

[@CREPOZOIDES.LE.MORBIDES]

BISOUS BONJOUR DE LA FRANCE BIENVENUE JAI ADORER JADORE CONTINUER MERCI A BIENTOT

[@vo9779]

Người Nhật họ khai thác rất chuyên nghiệp, kỹ thuật,an toàn, sạch sẽ, tiết kiệm tài nguyên.

[@ruei-honghuang5477]

令人大開眼界的影片！感謝！

[@aguswartono3072]

Saya mengagumi tingkat ketepatan dan kedisplinan orang-orang yang terlibat di sini. Mungkin penambangan batu adalah usaha yang ada di banyak negara, tapi pekerjaan pada tingkat ini saya baru melihatnya. Salut!

[@FfblastBlogspot]

Knp ga pke semen ya

[@TheLostBear78]

Thank you for showing some of the things that the stone was used to make! Very good quality video.

[@matthiasburger2315]

8:22 very fascinating stairs!

[@刹那乃奏]

凄いな まるで地底遺跡だ

[@komitadjie]

Ol' plugs and feathers still work just as well as they have since antiquity! Wedges are a marvelous thing. :)

[@KF-qj2rn]

i enjoyed the end part where you showed how used, very interesting.

[@MisuruAsakara]

中に鉄骨組んであるのがすごい

[@semirrahge]

The acoustics in this area are really interesting... I would love to see a longer cut that showcases the sounds.

[@siowfoonglai5820]

ありがとうございます

[@きも-f1i]

ハンマーの響く音が心地よいですね。

[@richardrudovsky6833]

Systém co funguje i pod zemí, ten kámen stále kvalitní, jeden způsob těžby, čekám jak kámen uplatní a vzhled❤

[@setiawanbenny809]

Batu alam memang batu terbaik untuk apa pun terlebih ditangan mereka yang menjiwai ... Hanya saja cara penambanggannya yang sangat berbahaya .. sedikit saja ada kelalayan akan fatal untuk mereka yang bekerja .. Semangkin dalam menambang batu .. semangkin mahal harganya Karena semangkin Beresiko

[@bfrerck]

As always very interesting.

[@2317くぅ]

凄い吊り方しますね。。。自分はとても真似できないです。。。 ご安全に！

[@rofnql]

日本はすごい！

[@policedog4030]

Adding wheels to bin for kerf waste could save many steps walking with the full shovel

[@sydneyshinshi]

They have plenty of time during the operation

[@Ahmar-akhdar]

مقلع الحجارة هذا مكان لتشييد قصر في المستقبل القريب سيكون عبارة عن مدينة متكاملة بصلابة ورونق جميل 😍

[@mikes7639]

What do they need palace for ?

[@Ahmar-akhdar]

@@mikes7639 Stupid question ! Is there anything more luxurious than a palace to live in?

[@AHMED_ALGHAMDI]

فعلا الذي أسماكم كوكب اليابان صدق ... تحفه وفن وابداع ... إلى الامام اليابان الجميلة ....

[@xmofo83x]

All those wire harnesses are putting in WORK!!!

[@themarsoff]

Очень трудозатратный процесс, сколько должен стоить блок на выходе?

[@IanFiebigwi]

Steve makes it look so easy.

[@LeiCal69]

That's the cleanest mine I've ever seen.

[@タクミ-g7j]

6:15 これって安全靴とかじゃなくて普通のゴム長...？ 足に落としたらヤバそう... 防塵マスクとか機械の歯のガードとかも無いの危なくないのかな

[@なんまいだ-p2e]

あはは😂、ペリカな世界だから必要ないんだよ。

[@gepe_TNG]

流石に安全長靴だと思いたい

[@Techischannel]

This stuff rocks.

[@郡司哲男]

近いうちに孫娘に大谷を見ようと思案中です

[@jackking5567]

That's fantastic! It looks like volcanic ash? Near me in Englands Lake District they mine slate in a similar way and it gets turned into many products too.

[@SB5SimulationsFerroviairesEEP]

Super! Merci du partage! Stéph.

[@travellerinfo]

The stone itself looks like a concrete block🤔

[@philbob99]

@ 6:50 using feathers and wedges to crack a block free.

[@АлександрМихайлов-ь3т]

Великолепбно снятый производственный процесс👍👍👍

[@webarchitect]

Добыча - это не производство.

[@billybobjohnadamjoe]

This is unlike any underground mine I’ve ever seen. It’s just so, orderly…

[@avavonobva]

Цікаве відео получилось, дякую)))

[@larrykluckoutdoors8227]

Great video

[@亜錬-m6z]

まるでコンクリート打ちっぱなしかと思える壁、これ全部上から切り出していった結果かぁ… 地上はクーラーがないと生きていけないような暑さなので夏も冬もある程度気温が一定に保たれる地下がうらやましい

[@mrMacGoover]

This is real life minecraft, where blocks of stone aren't merely produced by swinging a magical pickaxe.

[@hyy3657]

不錯的材料，製作非常精實

[@adriannose9615]

Tenemos muchas metas 💪 🙌 ✨ x cumplir animo

[@ericdanso2487]

This is fantastic. Hardworking guys , all well planed and simple method

[@maxxhyun]

와!현장 깔끔한거 정말 인상적이다.

[@nioatonondaphi6614]

Anche in Italia,a Carrara ,è così per l'estrazione del marmo bianco,che ha onorato ed onora sempre l'Italia per i magnifici lavori scultorei realizzati con questo pregiato marmo dal colore della purezza...

[@nioatonondaphi6614]

Fanno impressione le dimensioni e l'organizzazione di mezzi e uomini all'interno del sito di estrazione. Davvero impressionante.

[@xzytqweo3538]

I always wondered about "Oya" Stone. Now I know....thanks.

[@nirname-r4y]

It is always a problem to take out the first piece of sugar from a box. How do they cut out the first stone?

[@hanybany-v]

You do a hard and good job💥💥 Greetings to you from Egypt 💥💥

[@HasanAkkaya-g7p]

Japonlara bu taş ustalıklarına hayranım inanınki türkiyede böyle işyapan yok malesef deyerine bilenyok

[@jiggsborah7041]

I'm a 61 year old South African and I worked for may years in Asbestos and Gold and Coal mines. I enjoy mining videos

[@RandomTheories]

would be great filming location...like a villain lair or something :)

[@xmofo83x]

The cranes are amazing...

[@Hellnback303]

Wow, this is amazing.

[@HasanAkkaya-g7p]

Ben bunu ilk kez görüyorum cok güzel ben mermer silimcisiyim cok beyendim

[@hinako_kingdom]

もくもくと仕事をしているのを見るのはとても面白いですね こうやって石が切り出されているんだなぁ でもクレーンの使い方あんまりですね…… 横引きも、降ろした先で振り子みたいにしているのも危険です 事故になりませんように

[@rendelgb5161]

しかも全部一本吊りっていうのも中々にドキドキしますね (その一方で16:17に出てる展示は一応2本吊りにしてあるのが何とも)

[@kaedeyuzukichi]

ここのホイストクレーンはいわゆる天井クレーンのような東西南北があるタイプではなく、固定レールの前後のみのタイプだから横引きになるみたいですね。

[@matthewnaylor4412]

What a bizarre place? My grandfather work in coal mining in the north east of England you can bet the mines he went down didn't look like this! They were hellish places.

[@InsfireWozniak]

great video man, thank you

[@lourdesregina8378]

Lugar bem estruturado, os funcionários são ágeis e precisos, trabalho q requer bastante atenção. Muito interessante!

[@L00S3H3AD]

Looks like a Portal level to me. I especially like the ladder to stair combination.

[@Kaczorek2366]

And what will be built in the excavation? そして、発掘調査で何が建てられますか?

[@miles2378]

The played out sections will be used for storing stuf that need a stable climat/temp.

[@ChucHa-ed4vs]

Đây là một dự án của chính phủ nhật bản. Họ thực chất đang xây dựng thành phố dưới lòng đất. Hoặc họ sẽ để sử dụng vào mục đích quân sự. Vừa khai thác được đá. Để bớt đi chi phí. Chứ mục đích thật sự là vậy.

[@captainnutzlos3816]

Minecraft at its finest 😄

[@karlyohe6379]

Amazing. What happens to the quarry when it is mined completely?

[@captainnutzlos3816]

A big flooded cave 😄

[@Cthulhu-l_-n-_l-b]

テレビヒーローの遊び場か地下の観光地

[@Mr.Grimsdale]

They use all the accumulated dust to make geopolymer blocks, then make pyramids, its been done before.

[@StefanBlurr]

Maybe I am crazy, but I would like to work there, if the paycheck is decent. I just want to get rid of the stress. And I love using my muscle while I am still young (atleast this is what I like to believe)

[@dmk351]

this feels like aperture science vaults :D

[@nowhere64967]

Dangerous and hard work, using cast concrete is a better idea

[@morninboy]

Yes it is silly to use stone. There is a global shortage of the stuff

[@ml.2770]

A disturbing lack of respirators. Is the dust not hazardous?

[@sydneyshinshi]

It's wet down there

[@That1ufo]

@@sydneyshinshi And yet you can clearly see dust and them using silly cloth masks over just the mouth, Even if the is no quarts it can't be good to breath, The same things shocked me just after Fukushima happened.

[@sydneyshinshi]

@@That1ufo Yeah you are probably right mate. There is plenty of evidence of the heath damage of airborne dust I suppose. Cheers from Oz.

[@vanquynguyen8298]

Không biết sau khi xẻ rồi mài bóng nó sẽ đẹp thế nào , chứ khi còn thô nhìn nó như be tông ấy ? I don't know how beautiful it will be after being cut and polished, but when it's still rough, it looks like concrete?

[@mayakovski]

I was very surprised at how fast the cutting is. Good chains.

[@provo-go7717]

soft stone

[@Runefrag]

You can cut huge blocks of various types of stones like marble just by using ropes coated in abrasives. They can probably cut things about 3-4 times as fast by installing a water cooling system and using faster self-sharpening chainsaw blades with a smaller diameter.

[@provo-go7717]

@@Runefrag if by ropes you mean steel ropes then yea, but normal ropes would be torn apart by the abrasive faster than the stone would

[@Runefrag]

@@provo-go7717 Nah, they sometimes used abrasive coated ropes in ancient times to cut the last bit of big chunks they couldn't reach with more traditional tools. Nowadays companies use chains coated with diamond abrasives.

[@hide-zl4iw]

現代の建築技術であればピラミッドも造れそうだ

[@MrPDawes]

Looks like a Mine Craft excavation. I'm sure this could be automated far better. Seems to tie up people doing mindless task for much of the time. Could be a useful hole when completed. Nuclear bunker perhaps.

[@tyjonesd]

Astonishing work

[@mya200014]

I had major anxiety when they were moving the rocks. All I could think is someone is going to drop them mid-air😂

[@american7169]

That is some seriously soft stone!

[@benediktmorak4409]

would that have been -tuffstone-, millions of years ago formed on the seabed, with millions of little dead creatures, sand, clay, heat and pressure? European old Churches or buildings were built with that kind of stone. Still very hard, but fairly easy to cut and work with?

[@gorogoro721]

現場仕事してるからか、凄いと思うと共にあぶねぇ……と感じる所もあるのがあれ。

[@安次嶺かまんど]

危ないのはどこだろうと思いながら観て、これかなと思うのは3つ。 切り出した石を倒す時の足の位置。クレーンでの立て方とその際の足の位置。クレーンでの吊り方。

[@quangtuyennguyen356]

😊

[@quangtuyennguyen356]

😊

[@yutakomatu9652]

あと防塵マスクつけてないとか？

[@martinnguyen4542]

​@@安次嶺かまんど😂😂😂😂😂❤

[@AffordBindEquipment]

what kind of stone is this?

[@yutwo11]

クレーンのフックに外れ止めがついていませんが大丈夫でしょうか。

[@pierretripotin2787]

Clean, neat, safe, rational, no waste : impressive.

[@davidmartensson273]

I would say that would be a perfect setting for the next Bond super villain hide out :)

[@davel4708]

I wonder why this quarry is underground. Are there not areas where the stone is closer to the surface?

[@Runefrag]

I was expecting a lot more complexity for a device that big and bulky, like a dust collection bin or a water jet to make guide cuts but i guess it must be ancient.

[@randyclements2131]

How do you cut under the stone to remove them

[@fg786]

They don't. Have a look at 6:00 they put a wedge in the cut groove. Pushing that deeper in will angle the stone creating tensile stress at the end of the cut which will at some point create a crack. The stone's strength under tensile stress isn't that high so it brakes at the end of the cut and the induced crack runs through. You can see, that the break plane isn't smooth at all. The crack just extends along the stones structure. The crack propagation for brittle materials is usually instable, there is nothing in the material that keeps a once developed crack from propagating under stress. This is why a porcelain coffe mug shatters dropped to the floor, while a metal one gets a dent.

[@jebes909090]

cant they afford a second shovel 😅 i wonder why they go with the chain saw over a circular saw?

[@xmofo83x]

Imagine the sounds if that long crane to the top snaps...

[@venusalcantara8659]

That is so amaizing.😮 👍🇲🇽

[@jorual12]

Uma boa forma de construir um abrigo nuclear ganhando dinheiro.

[@adriennecloeter7394]

Amazing that they use what is basically a chainsaw for stone.

[@miles2378]

Its got Dimond or cardide teath.

[@MrDaehee1018]

와우 작업장 관리 최고네요

[@madalinmaximilian6899]

With the same process pre-Dinastic Egypt build the great pyramid of Giza .. :D

[@Mr.Grimsdale]

Not quite, they used the left over dust to make geopolymer blocks, the area around the pyramids was once a quarry.

[@alpineflauge909]

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