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  1. #31
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    CBN is used not considered toxic by ingestion, or cancerous.
    Prolonged inhalation of high concentrations of CBN dust is known to cause "benign pneumoconiosis" which is like silicosis.
    However, unlike ceramic type grinding wheels standard sharpening produces practically no abrasive dust (in the case of CBN wheels is the CBN itself) so just sharpening up some turning tools is probably a second of 3rd rate risk compared to her factors.
    I don't think the grinding metal particle size profile is any different compared conventional wheels but as it removes metal rapidly it will make more metal dust.
    Heaven knows what this dust does.

    I have been thank about my exposures to various things oven the years and this is one that looks like a good candidate.


    Late in 2014 a group of us from the mens shed were able to access unwanted stuff from the old Shenton Park Rehab Hospital site which had closed down.
    Once the staff had left for the new Fiona Stanley, WA Mens sheds were permitted onto the site and we scored all manner of goodies -eg heaps of furniture and lots of useful materials from the patient rehab area .
    The other area we got a lot of stuff from was a large workshop where they made prosthetics.
    This was essentially a metal workshop where they bent, welded ground and polished stainless steel.
    They had several large metal dust extractors (too big for us) and a smaller one which I dismantled and we took it with us
    The small extractor had about 200 L of dust in a storage bin which we let behind but during the dismantling and handling process I got covered in the grinding and metal dust.
    The filter bags were particularly dusty with a 5 mm layer of dust on the inside.
    As well as metal, I have since found out that grinding dust contains silica and various binders from the abrasives.
    It was a hot day and I was sweating and the stuff stuck to my skin like mud and within minutes I was itching all over and wheezing and coughing.
    It was a couple of hours before I was able to take a shower and where I saw I had also developed a red rash where the dust had been sitting in the sweat, mainly on my arms and face but more or less all over.
    The rash subsided in a day or so but the cough persisted for about week..
    We took the extractor itself back to our shed where I set it up outside and washed it with a hose (it was mainly plastic) and we never ended up using it and sold it a few months ago.
    Shoulda been more careful I guess.

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  3. #32
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    Innovations are those useful things that, by dint of chance, manage to survive the stupidity and destructive tendencies inherent in human nature.

  4. #33
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    Nickel allergy usually takes 24-48 to show up which is not what I experienced.
    However given the extent of the exposure and I could also be more sensitive to it - I should get tested and this might be a helpful pointer.
    The fact that the rash happened so quickly leads me to think it was the inorganic fibres from the abrasive - it really did feel like fibreglass itch as this happens pretty quickly.
    I have much longer term exposure to Al dust than anything else.

  5. #34
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    I was thinking of more of exposure by inhalation since you mentioned being covered with the dust. https://en.wikipedia.org/wiki/Metal_fume_fever
    Innovations are those useful things that, by dint of chance, manage to survive the stupidity and destructive tendencies inherent in human nature.

  6. #35
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    Had a follow up appointment with the specialist about the bronchoscopy yesterday.

    All results still indicate sarcoidosis.
    However the specialist and his offsider are concerned about the size of a couple of the bigger lymph glands, in particular the glands that are at the base of my windpipe. Here reckons if they grow any more they will restrict my breathing.

    The net result of this is that I will go into hospital for another bronchoscopy and a another procedure which involves 2 or 3 keyholes being opened up in my neck and just under a collarbone and going down inside the rib cage to extract some of these glands. It's a 1-4 (usually 2) day hospital stay.

    As well as checking for malignancy the doc said they will also get some of the glands analysed for elemental composition to see if any specific unusual element is present.

    The small bit of good news is I have now hit the Medicare safety net so can get more back. YAY!

  7. #36
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    Very glad to hear that it's not worse Bob.
    Innovations are those useful things that, by dint of chance, manage to survive the stupidity and destructive tendencies inherent in human nature.

  8. #37
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    best wishes Bob
    regards from Alberta, Canada

    ian

  9. #38
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    Hey Bob, I hope this all resolves quicker than expected. Sorry to hear all.

    Will I see you at the club meeting this coming Monday (I am presenting)?

    Cheers

    Derek
    Visit www.inthewoodshop.com for tutorials on constructing handtools, handtool reviews, and my trials and tribulations with furniture builds.

  10. #39
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    Quote Originally Posted by derekcohen View Post
    Hey Bob, I hope this all resolves quicker than expected. Sorry to hear all.

    Will I see you at the club meeting this coming Monday (I am presenting)?
    Thanks Derek, I will try to come along.

  11. #40
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    Just come out of the bronchoscopy and biopsy procedure All good, they took the hint on a bit of Vaseline on the bronchoscope. No lacerated lip this time. Care is top rate. Thanks Hollywood nurses.

  12. #41
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    When I said all good that refers to me feeling ok. The lumps extracted have to go for testing & this could take a couple of week. The other good bit is I can go home tomorrow!

  13. #42
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    Thought you meant that.

    I particularly liked the reference to "Hollywood Nurses" which implies that one of the doctors looked like Ben Aflick
    regards from Alberta, Canada

    ian

  14. #43
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    Nah, if only, Hospital is called "Hollywood" but there are dozens with lil'tin Oirish accents!

  15. #44
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    From memory BobL, you are a diabetic like myself. How do You find the Docs and Nurses at controlling your levels? My levels generally get up to around 25 after I am admitted, at that stage I demand to see the Doc in charge and advise him/her I will advise the nurses on insulin requirements before they kill me. On three occasions now my level has gone off the scale. Docs are all for it, but the nurses get very, very upset. They call me a difficult patient - rather be difficult than dead!

  16. #45
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    I am type two but can control at home using a strict diet. However doc requires me to take one Diaformn a day.
    This then gives me a bit of leeway in hospital where zero sugar low carb diet is not always available. While in hospital the sugars have ranged from 7.2 to 9.2

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