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Detecting lead in game animals

Discussion in 'Shooting Related Threads' started by pyrdek, Mar 22, 2009.

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  1. pyrdek

    pyrdek Well-Known Member

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    Read a CNN posting about "Green Bullets" and a question or two comes to mind. Anyone know about the manufacturing, use and care of the lead aprons/shields used in x-ray rooms and such? From what I could find, it looks like all the various reports, where initial data sources could be determined, came back to one or two basic studies. I do not know if other studies were conducted by sources other than those I have seen. I also have not seen any reports where the actual methodology used to determine the x-ray detected presence of lead was described.

    http://www.cnn.com/2009/TECH/science/03/04/green.bullets/index.html

    I do have one question involving the detected presence of lead in ~50% of the x-rayed meat in the CNN report. It has to do more with the methodology and materials used in doing the x-ray survey. The report stated when the bullets "EXPLODE" (sensationalism in journalism since hunting bullets expand but do not explode!) they found traces of lead in microscopic sizes up to a foot and a half away from the wound channel.

    Now my question is, where does this microscopic lead come from. Since every time I have had an x-ray I and the X-ray technician both had too wear heavy BUT STILL FLEXIBLE safety aprons, what type of lead in used in these aprons. It obviously is not blocks of solid lead and it does not feel like lead shot. Could it be some type of fabric or plastic containing lead dust? If so, if these apron shields are not properly maintained or have reached end 0f life, could this lead dust impregnated fabric be shedding lead into the area where the technician is working? If so, would that lead, in microscopic sizes, also be deposited onto the sample tissue being x-rayed?
     
  2. ronbo142

    ronbo142 TS Member

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    Detecting lead in me!

    Thats what I want to know!

    Ronbo
     
  3. shooterIII

    shooterIII Member

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    Its a Kroc of dew-dew. Test were done in N.D and Minn and proved it was a hoax. I've been eating big game and birds shot with lead for over 60 years, and I'm still alive. So in spite of all the anti bull, its safe to eat all the game you want that is shot with lead!!!
     
  4. capvan

    capvan Active Member

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    I've been an x-ray tech for over 15 years. The aprons aren't actually made of lead. I don't know what the stuff is, but the aprons are also rated as "lead equivilant". Even thought they are flexible, they still crack. We have to x-ray the aprons once in a while to determine how bad these cracks are so we know when to discard the aprons. They go back to the manufacturer. They are NOT made of lead.
     
  5. highflyer

    highflyer TS Member

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    The left always has other motives for taking away our freedom. They say they are worried about health and the environment. What a lie. I get so sick of all their lies. Notice how frequently they use fear to take away freedom. Fear based on lies.
     
  6. jagrdawger

    jagrdawger TS Member

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    The doctor who supposedly found lead in game meat turned out to have a very peta friendly agenda and was an activist. Based on his statements that state canceled their hunters helping the hungry type program where game meat is donated through participating lockers. His statements were later investigated and samples of game meat were tested. His agenda was exposed and his claims were found to be fabricated as testing could not reproduce his results. Unfortunately, many families who would have had a good source of artificial hormone free protein instead got nothing.

    Typical of our media, the intial false story got much more press than the truth.
     
  7. pyrdek

    pyrdek Well-Known Member

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    The reason I am trying to confirm the methods used when this, what I think is BOGUS, "research" was done is that now my daughter just came back from a national conference for wildlife rehabilitators held in the Chicago area and there was a big push on the part of at least some of the conference leaders to urge the banning of lead in bullets, sinkers and other outdoor applications. This, from what I can see, is just one more front to attack hunting, fishing and shooting sports in general.

    I can see lead shot in duck gizzards contributing to lead poisoned waterfowl but I can not see how "MICROSCOPIC" size lead particles can penetrate a foot and a half of meat. That would go contrary to any of the laws of physics I know about mass and velocity energy levels.

    I have asked for a copy of the report but so far I have not received either the report or any information about where it originated.

    I did do some more looking on the ratings and manufacture of lead shield aprons. Yes, that is what they are call, LEAD shield aprons. From what I see the majority of such aprons contain lead impregnated rubber. They are rated in lead equivalent units and .5mm of Pb Eq. seems to be the standard. There is one proprietary polymer that is also used. Demron is the name and it is reported as much lighter in weight but also more expensive than the standard lead shield.

    The way I read it, the Lead Eq. would be the shielding provided by a solid piece of lead of .5mm thickness but the lead is dispersed through the rubber so the rubber pad would obviously be thicker but provide that effective thickness of lead.
     
  8. TDB III

    TDB III TS Member

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    I've detected lead in birds numerous times by the old "tried and true" method of...........my teeth! How many of you have bit into a lead BB in a pheasant or duck or goose over the years? I'm 60 this year and no detectable harmful lead levels as of yet. Shoot them birds!!!

    Tom
     
  9. arend003

    arend003 Member

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    I was involved in the MN testing ..and although I was skeptical and still am slightly as I was not involved in the harvesting of the tissues I tested I did find lead in some. I did also see some of the x-rays taken in MN but was not involved with them so can not comment on the accuracy or how they were done. As I note I have done toxicology analysis for over 33 years most of the lead cases are in birds who have ingested lead and retained it in their gizzards.
    Tom
     
  10. Two Dogs

    Two Dogs Well-Known Member

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    I just had to return a shipment of lead from China.....It was full of toys......
     
  11. highflyer

    highflyer TS Member

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    Don't worry, global warming or the bird flu will kill you before the lead in your meat does. Only Obama can save us from ourselves.
     
  12. mollyone

    mollyone TS Member

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    Two dogs



    great line



    mollyone
     
  13. 3dram8

    3dram8 Member

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    Wouldn't the amount of "lead" be determined by the animal's speed and distance from you? ;>) .....Rick
     
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