Hi CWI555!
Here are some other links that I've kept over the years in my bookmarks (currently over 4 gigabytes worth and shortly approaching 5!!!) which explains why I need many external drives, and I still have my old but faithful Compaq SCSI workstation (2gigs' of RAM w/ECC) that I use for quick data retrieval & storage via "Daisychaining" 10 - 36 gig scsi 10K rpm hard drives within my own self-built network made up of mostly salvaged parts besides my newest creation that includes an Intel Quad core water cooled with 4gig's of RAM and almost 3 terabytes of storage with full data backup which also includes RAID via my 2 "Raptor" hard drives!!!
I also put together a few SATA connected external hard drives for extra storage enclosed in the best made external hard drive enclosures by Antec!!! Pricey but worth it!!! Because you never know how much space one is going to need to store all of my curiosity, all of my entertainment and all of my information... Btw, my stuff is protected by some heavy duty data protection besides what's encrypted and that's only if one penetrates my physical (Hardware based) firewall only to be blocked by at least three or more that is - if they get through the first one!!! ;)
The only downside of having all of this data is the constant maintaining of it all!!! The good thing is that I'm always finding stuff that either is relevant to me or not and so I try to maintain a constant 60 to 70% free space in each drive so as to maintain efficiency... Anywho, I've got to catch myself before I brag too much about my own self built network so here's what I found that you and others might find interesting that's related to this thread:
http://www.pro-fusiononline.com/tungsten/material.htmhttp://www.twi.co.uk/j32k/protected/band_13/faq_thoriated.htmlhttp://www.aws.org/technical/facts/FACT-27.PDFhttp://www.aws.org/technical/facts/FACT-02.PDFhttp://www.iem-inc.com/prmade9.htmlhttp://www.iem-inc.com/prmad9r.htmlhttp://www.hse.gov.uk/fod/infodocs/564_6r.pdfhttp://www.huntingdonfusion.com/downloadfiles/HSE%20Thoriated%20Tungstens.pdfhttp://www.ndt.net/article/ecndt2006/doc/Th.3.5.5.pdfhttp://www.multistriketungstens.com/downloads/TWIreport.pdfhttp://www.thefabricator.com/ArcWelding/ArcWelding_Article.cfm?ID=511Here's a good article originating from Japan that CWI555, Larry and Stephan will find interesting:
http://www.jniosh.go.jp/english/indu_hel/pdf/ih_41_3_18.pdfHere's an MSDS for Hypertherm's 2% thoriated W:
https:/.../u01/app/oracle/library/Safety%20and%20Regulatory/MSDS/HyperthermThoriatedTungstenGrade_180667.pdf
This one is from Thermal Dynamics otherwise known as Thermadyne nowadays (interesting that they list thorium dioxide as opposed to thorium oxide - hmmmm):
http://www.thermadyne.com/thermaldynamics/literature/pdfs/msds/TR703.pdfhttp://www.thermadyne.com/thermaldynamics/literature/pdfs/msds/TR703.pdfAnother MSDS sheet from BOC in "Kiwi" land otherwise known as New Zealand:
https://pgw100.portal.gases.boc.com/boc_sp/nz/safety/0169.pdfAn interesting Abstract that the NIH uses as one of it's primary sources of citing empirical data in their own publications with respect to potential health risks involved with exposure to 2% thoriated W in the workplace:
http://rpd.oxfordjournals.org/cgi/content/abstract/103/4/349Scroll down when you get to this link:
http://www.welders-direct.com/merchant2/merchant.mv?Screen=PROD&Store_Code=WD&Product_Code=SIZEX7-2Cool info in this link with respect many different types of radioactve materials used to make many commonly used items years ago:
http://www.blackcatsystems.com/science/radprod.htmlHere's a link that has some cool info on "Wolfram" or Sometimes spelled "Wulfram" otherwise known as tungsten:
http://www.flokal.com/html/products/tun/tun.htmHere's all of their tungsten engineered products including Yttriated Tungsten electrodes for GTAW... This is a Dutch company called Flokal:
http://www.flokal.com/html/products/tun/tun_alloys.htmThis one is a link to many abstracts regarding the exposure to 2% thoriated W due to welding & grinding or other industrial working exposure:
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Display&itool=abstractplus&dopt=pubmed_pubmed&from_uid=7730071Hey Larry! you might find this abstract interesting:
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Retrieve&dopt=AbstractPlus&list_uids=8396174&query_hl=3&itool=pubmed_docsumYou'll get a kick out of this FAQ from Huntington Fusion Technologies:
http://www.huntingdonfusion.com/HFT/modules.php?name=FAQ&myfaq=yes&id_cat=8&categories=Techweld+Multistrike+TungstensHere's their "Techweld Multi Strike" showpage:
http://huntingdonfusion.com/HFT/modules.php?name=Content&pa=showpage&pid=11Here's there main "Multi strike" W .pdf articles page:
http://www.huntingdonfusion.com/HFT/modules.php?name=Downloads&d_op=viewdownload&cid=1Here's their "Multi-Strike.com" homepage:
http://www.multistriketungstens.com/Here's Miller Electric's via weldcraft's take on the subject:
http://www.millerwelds.com/education/articles/articles83.htmlHere's the Miller Electric "Millerwelds GTAW handbook .pdf:
Here's an actual appeal to a Law Suit filed by an inmate employed by the State of Texas Corrections industries related directly to the plaintiff's exposure of 2% Thoriated W electrodes and their grinding produced dust while welding for TCI:
http://www.ca5.uscourts.gov/opinions/pub/03/03-50650-CV0.wpd.pdfInteresting Data here:
http://en.wikipedia.org/wiki/ThoriumThis .pdf article from the USGS is old (1995) but, it has some interesting facts in it with respect to thorium oxide & thorium nitrate fro the US Geological Survey:
http://minerals.usgs.gov/minerals/pubs/commodity/thorium/690495.pdfAnother oldie but, goodie from the Oak Ridge Associated Universities:
http://www.orau.org/PTP/collection/consumer%20products/weldingrod.htmA good link:
http://www.atsdr.cdc.gov/tfacts147.htmlhttp://web.lemoyne.edu/~giunta/ruthsod.htmlHi Stephan! If you could get access to these publication on "your side of the pond" you will find some interesting information: ;)
http://cat.inist.fr/?aModele=afficheN&cpsidt=5206445http://cat.inist.fr/?aModele=afficheN&cpsidt=1843023Here's another interesting article abstract:
http://www.baua.de/en/Publications/Research-reports/1997/Fb767.htmlI almost forgot Stephan! You probably already seen this one from the European Union:
http://ec.europa.eu/energy/nuclear/transport/doc/final-version-study1.pdfYou might just like this one also:
http://ean.cepn.asso.fr/DosAugsburg/Final_doc/Session_2/S2_06_Kunz.pdfThen again, it would'nt be fair to exclude anyone of the entire conference proceedings of the 9th European ALARA network workshop on "Occupational Exposure to Natural Radiation" held in Augsburg, Germany in October of 2005 @ this link in either .pdf or .ppt format:
http://ean.cepn.asso.fr/DosAugsburg/program9.htmlHere's some more stuff from Plansee:
http://www.lencocanada.com/pdf.d/500-06.pdfThroium Data from EnvironmentalChemistry.com:
http://environmentalchemistry.com/yogi/periodic/Th.htmlAnother intersting link for all who yearn to learn more:
http://theodoregray.com/PeriodicTable/Elements/090/More interesting data on the elementknown as Tungsten:
http://www.topmim.com/tungstenshielding.htmAnother good link:
http://www.speclab.com/elements/thorium.htmHere's some interesting stories slightly off-topic:
http://www.flatrock.org.nz/topics/environment/common_radioactive_items.htmAir samples did'nt turn out so bad in this study's abstract after all when all was said and done!!! Certainly below the DAC:
http://www.osti.gov/energycitations/product.biblio.jsp?osti_id=249957Check out this MS Word .Doc from CK Worldwide:
http://www.ckworldwide.com/MSDS.docFinally, these are some of the beneficial uses of radiation in society today:
http://nuclear.inl.gov/docs/factsheets/beneficial_uses_radiation_1003.pdfI hope these link are helpful inunderstanding the true facts regarding thorium and thoriated tungstens and the beneficial uses of radiation in society today. I also want to apologize to anyone that did'nt care too much when I briefly described my own personal home network which I built from parts myself ;)
Respectfully,
Henry