SKU: 51774733248

MŽtallurgie Extractive du Cobalt - 3 ed.

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MŽtallurgie Extractive du Cobalt - 3 ed.Actuellement, prt de 20%% de la production mondiale de cobalt, soient prt de 10 000 tonnes et 60%% de la production mondiale de super alliages base de cobalt sont rcuprs par les USA qui considrent ce mtal comme hautement stratgique au point que sa carence pourrait affecter srieusement ses domaines conomiques, industriels et militaires ainsi que ceux de nombreux pays hautement industrialiss. On trouve ainsi dans cet ouvrage des informations sur

Actuellement, pr�t de 20%% de la production mondiale de cobalt, soient pr�t de 10 000 tonnes et 60%% de la production mondiale de super-alliages ˆ base de cobalt sont rŽcupŽrŽs par les USA qui consid�rent ce mŽtal comme hautement stratŽgique au point que sa carence pourrait affecter sŽrieusement ses domaines Žconomiques, industriels et militaires ainsi que ceux de nombreux pays hautement industrialisŽs.
On trouve ainsi dans cet ouvrage des informations sur lÕorigine, lՎlaboration du cobalt, son recyclage et son utilisation tout cela illustrŽ de pr�s de 80 flow-sheets, croquis et graphes.
Cet ouvrage est un recueil, une mine dÕinformations, dÕexpŽriences et de pratiques industrielles utiles ˆ avoir pour mieux conna”tre lÕun des mŽtaux le plus influent sur lՎchiquier stratŽgique et Žconomique mondial.

Roger RUMBU, Met. Eng., PPM.

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SKU: 51774733248

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Bryan Combs
Charlottesville, US
★★★★★ 5
Dress shoes
Size: 9, Color: Light Brown/Coffee
Very comfortable and well made shoes.
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Reviewed in the United States on May 24, 2026
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erick
Pawtucket, US
★★★★★ 3
Runs big
Size: 10, Color: Black
Too big , looks okay. Try 1 size down
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Reviewed in the United States on May 13, 2026
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Chris
Boise, US
★★★★★ 5
Good value
Size: 12, Color: Black/White
Very good. Pretty comfortable and look sharp. Can't beat it for the price.
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Reviewed in the United States on May 31, 2026
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Brittney Settles
Grantham, US
★★★★★ 5
Graduation Approved
Size: 10.5, Color: Black, Size: 10.5, Color: Black
These shoes turned out perfect for a last minute graduation outfit change. I loved the finish of the shoe and how comfortable my son said his feet felt while being on them so long in new shoes. They honestly looked just as good as a pair of Cole Haans. Very affordable price for a comfortable shoe.
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Reviewed in the United States on June 6, 2026
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C. C. Jones
Grantham, US
★★★★★ 5
Incredible!! Looks like a dress shoe, feels like a sneaker
Size: 13, Color: Black
These shoes are amazing. The other comments about comfort are an understatement. I bought these because, although I am a professional working in a business office, I can't bear to wear dress shoes all day so I've always gotten very not-flashy plain black but very comfortable sneakers and hoped for the best in either nobody paying much attention to my shoes or at least not thinking it a big deal. Now I'm off to a business trip meeting with some bigwigs where I'm a bit more self-conscious than usual about the shoes, and I'm thinking either I can get out the dress shoes I own and deal with the discomfort for the week, or see if there is anything like a dress shoe that's actually comfortable. The AI inquiry found these as one of the options, and it was a terrific suggestion. They pretty much look enough like a dress shoe to totally pass when I'll be wearing them with some nice slacks and button-up shirts and blazer. When they arrived earlier today and I laced them up and put them on, these might very well be the most comfortable shoes I've ever had on my feet. I was thinking the Rockport shoes I'd worn maybe 15-20 years ago were the king of the hill for comfort, but I believe these have outdone those. When I put them on and was wearing them around the house to get a feel for them, I really didn't want to take them off. I walk around the house in socks or bedroom slippers, but these shoes are awesome. I've found my everyday shoes to replace the black sneakers I'd been wearing for the past few years that have reached the point where they needed to be retired anyway. When these wear out, I think I'll try another pair from the same manufacturer. I hope their other shoes feel like these. Before asking the AI, I had no idea there were actually "dress sneakers". I described that kind of thing to the AI and just assumed it would find some "passably" comfortable dress shoes, ones that weren't COMPLETELY unconfortable, but this was a great surprise.
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Reviewed in the United States on November 6, 2025

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