Marine Diamond Mining.

Author
Discussion

Huntsman

Original Poster:

8,083 posts

251 months

Wednesday 22nd November 2017
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Until today I did not know that diamonds could be mined from the sea.

http://gcaptain.com/de-beers-order-worlds-largest-...

Assume its a big dredger and a load of sifting work?

Perhaps I could find diamonds in the Solent mud?

motomk

2,155 posts

245 months

Wednesday 22nd November 2017
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https://youtu.be/muueRXafdQI
Peace in Africa from Mighty Ships.

Perik Omo

1,924 posts

149 months

Wednesday 22nd November 2017
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They've been doing it for years off the Namibian coast. I was offered a job at a DeBeers facility that processed the dredged diamonds in 1980 but turned it down as it meant living in a "closed" compound with a trip to Cape Town once a month for two days and considering the isolation the pay wasn't that good either.

Condi

17,299 posts

172 months

Friday 24th November 2017
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A very easy way to destroy whatever is living in the ocean. Not least because of the silt produced which then muddies the water for miles around. I struggle to see how this is the future.

ReverendCounter

6,087 posts

177 months

Friday 24th November 2017
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Isn't this why fishermen in those regions have taken to piracy?

anonymous-user

55 months

Friday 24th November 2017
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Also an excellent cover story for recovery of someone else's submarine......


Project_Azorian

;-)

Flying Phil

1,597 posts

146 months

Friday 24th November 2017
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Wilbur Smith wrote a book called "The Diamond Hunters" in 1971, which had a diamond mining ship as major part of the storyline!

anonymous-user

55 months

Friday 24th November 2017
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BTW, anyone interesting in just how bonkers Project Azorian and the Hughes Glomar Explorer really were, check out some of the details of the system built to lift a 2,000 tonne sub from the deep ocean:

GlomarExplorerSpecs


Flying Phil

1,597 posts

146 months

Saturday 25th November 2017
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Those specs are awesome! I hadn't realised that the entire derrick structure was pivoted and that gigantic roller bearing........What you could do with CIA money........What are they doing now?

bucksmanuk

2,311 posts

171 months

Saturday 25th November 2017
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I've read the book which is something else, but those drawings and photos put a whole new light on it - amazing project

anonymous-user

55 months

Saturday 25th November 2017
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Flying Phil said:
Those specs are awesome! I hadn't realised that the entire derrick structure was pivoted and that gigantic roller bearing........What you could do with CIA money........What are they doing now?
The bearing itself was a work of art, and brilliantly clever to power the centre race so that static friction is removed!

(bearings don't like being stationary, as they are designed with rolling elements that entrain oil etc, so big bearings used for low speed applications are a 'mare, and can brinell their bearing races under pointloads, and lock up under static friction. To overcome that, that huge "semistatic" bearing used 3 races, where the middle race is spun by a hydraulic motor, so the bearing elements are moving all the time at a decent velocity! )

anonymous-user

55 months

Saturday 25th November 2017
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Without wishing to derail the OPs thread, i love the fact project Azorian was "hidden in plain sight"

For example, Journo's were invited to see and photograph the "equipment barge" used to load "mining equipment" into the moon pool of the HGE. Take a look at this picture:





What do you see? a large structure? Look closely, hmm, wonder what those pivot points could be used for?


Later de-classified pics give the game away:






Amazing engineering.




Condi

17,299 posts

172 months

Saturday 25th November 2017
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And yet for all that, it dropped the really desirable bit back to the ocean floor.

anonymous-user

55 months

Saturday 25th November 2017
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Condi said:
And yet for all that, it dropped the really desirable bit back to the ocean floor.
yup, hundreds of millions of dollars (around $1B in todays money) and they messed it up (or did they?? lol)

The real issue was that the project was compromised and the papers found out about it, hence it over night made the HGE useless, as it could no longer go anywhere without a russian "escort". There were plans to go back and retrieve the dropped portion, but that was scuppered! The HGE sat around for over 20 years before anyone knew what to do with it after that!

Bonefish Blues

26,931 posts

224 months

Sunday 26th November 2017
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Condi said:
A very easy way to destroy whatever is living in the ocean. Not least because of the silt produced which then muddies the water for miles around. I struggle to see how this is the future.
Agree completely.

skirk

243 posts

142 months

Monday 27th November 2017
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HMS Challenger was sold to De-beers in the early 1990's to suck diamonds from the seabed......damn waste of a good Navy ship.....