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9:37pm 12-30-2017
Visiting your wonderful website once again. It is the definitive quick reference for historical rebreathers. Thanks again for this marvelous site!
2:17pm 12-19-2017
Fernando L Alberto
Thanks for sharing such a high quality information!
4:28pm 12-16-2017
Carl Freel
I'm trying to get replacement canisters for my Navy MSA mask type A4! Do you have any idea where I can find them? PS Merry Christmas!
2:29am 12-15-2017
Rod Corkum
Just found your site through a Google search on the ship Gunilda. I was a bit curious about the shipwreck as I found a reference to it in a book "Wake of the Green Storm: A Survivor's Tale" which I had also found through another Google search.

What interested me is that page 154 of that book where it talks briefly about the Gunilda states that the captain at the time of the sinking was an elderly Capt. Alexander Corkum. I had a third cousin named Capt. Alexander C. Corkum who was a very good poet and published a book of poetry "Musings of a Mariner" in 1921.

Could this be the same Capt. Alexander? A little more fortunate Googling and I found the June 2014 edition of Northern Wilds magazine and there on page 51 in an article on lighthouses on Lake Superior (totally unrelated to the Gunilda) they used a quote from one of Capt. Alexander's poems and stated that he had been the Master of the Gunilda. Bingo, a little more information known about an earlier relative.

Sometimes it seems to be most unlikely ways that turn up answers.

Rod Corkum
10:45am 12-13-2017
Emile Szendy
Thank you for what must be at least my hundredth visit!
I will definitely go naked diving this Saturday to celebrate
11:33pm 11-20-2017
Brandy gemza
Thank you for sharing this information it's special to me
2:09pm 11-10-2017
Ernest O W vd Stelt
Hi Jan Willem,

Bij opruimen van niet meer werkende sites zag ik ook jouw website.
Even de groeten doen!
Ik ga nog regelmatig naar tropisch water om te duiken en video's te maken.

Mvg, Ernest
Replied on: 5:49pm 11-21-2017

Hoi, Ernest, leuk van je te horen.
Goed dat je steeds nog dukt. Bij mij is het doren banenwissel op een (tijdelijk) laag pitje. Ben nog wel enthsoast met de sport en hoop binnenkort ook weer eens een buitenlandse trip te maken!
Hartelijke groeten,

Jan Willem

1:05pm 10-31-2017
Mark Tebbutt
Really kool site loads of info on bubble helmets.
4:10pm 10-21-2017
Earl McMillen
Very interesting and informative! What is the status of Gunilda today? Would it be realistic, with modern technology, to raise her?


Earl McMillen
McMillen Yachts
5:58am 10-08-2017
James Allen EMC(SS)
4:50pm 09-16-2017
stephen williams
Very interesting . I love the proto BA set used to be an instructor on them Mk4 & Mk5, plus the Salvus 1/2 hour set. There used to be a rhyme for the start up procedure :- " While the dresser buckles you, pull out plug and mouth piece do. main valve lock it take a reading, nose clips, bypass do your breathing, protect your sight , get your light . Your alright. remember that from 50 years ago.Happy days
Replied on: 5:33pm 09-16-2017

Stephen, thanks for the ryme, very valueble, and thanks for visiting my website!

6:47pm 08-30-2017
Wm. E. Townsley
Historically curious.
12:54pm 08-27-2017
Anthony Appleyard
Very useful website. Please keep it running and up-to-date.
4:46am 08-08-2017
Mark Keller
Saw a feature "on the waterways" I think with Jason Robards, that included and episode on the Gunilda. Spent several days thinking a ways to refloat the ship. I check on it every few years or so to catch up on the story. Thanks for your efforts.

6:17pm 08-07-2017
Robert T. McCaa
The Breathing Apparatus was developed around 1926 as a refinement of the Gibbs rebreather , which was in use in Europe.

It was developed by George McCaa, a mining engineer by profession, who was my Grandfather's brother. It was manufactured and sold by the Mine Safety Appliances Corpoation in Pittsburgh Pa. Primarily for the mining industry. The unit was originally equipped with a mouth bit for breathing , similar to what is used on SCUBA gear. Later a full facepiece was provided, approved as "auxiliary equipment"

The original version was rated for two hours of use, and was worn on the back. The sloping cover was designed so the rescuer could carry anotyher person "piggy back" style. Later a one hour version was made, worn on the front. The time limitation was set by the ability of the "scrubber" or "regenerator" to remove Carbon Dioxide from the exhaled breath. It "breaks" quickly and after two hours, physiological problems were likely to occur. The scrubber was a chemical mixture which was packaged loose and separate from the unit in cans, so the unit had to be charged before use. Although used in mine rescue up until the 60's or 70's, the unit never became widely used by the Fire Service, most probably because of the time and trouble it took to charge it up, and also because the procedures for useage were quite meticulous to keep the unit from becoming Nitrogen or Carbon Dioxide bound.
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