1. Radon History, properties, uses, and handling. http://pearl1.lanl.gov/periodic/elements/86.html

Atomic Number: Atomic Radius: Atomic Symbol: Rn Melting Point: -71 ºC Atomic Weight: Boiling Point: -61.7 ºC Electron Configuration: [Xe]6s Oxidation States: History (From radium ; called niton at first, L. nitens : shining) The element was discovered in 1900 by Dorn, who called it radium emanation . In 1908 Ramsay and Gray, who named it niton, isolated the element and determined its density, finding it to be the heaviest known gas. It is essentially inert and occupies the last place in the zero group of gases in the Periodic Table. Since 1923, it has been called radon. Isotopes Twenty isotopes are known. Radon-22, from radium, has a half-life of 3.823 days and is an alpha emitter; Radon-220, emanating naturally from thorium and called thoron, has a half-life of 55.6 s and is also an alpha emitter. Radon-219 emanates from actinium and is called actinon. It has a half-life of 3.96 s and is also an alpha emitter. It is estimated that every square mile of soil to a depth of 6 inches contains about 1 g of radium, which releases radon in tiny amounts into the atmosphere. Radon is present in some spring waters, such as those at Hot Springs, Arkansas. Properties On the average, one part of radon is present at 1 x 10

2. Radon Labs GmbH Berlin Homepage radon Labs. German Game Developer. Creator NOMADS. Offering the Free Portable Game Engine THE NEBULA DEVICE. radon Labs GmbH Game Development, http://www.radonlabs.de/

Radon Labs GmbH Game Development News Games Schwarzenberg Project Nomads ... Send Email Visitors since 1999-Aug-16 : Radon Labs is a Game Development Studio, located in Berlin , Germany. Radon Labs is member of G.A.M.E. the Association of Berlin game developers. Radon Labs has released its base technology The Nebula Device 2 to the public: for free! Use it in your own commercial, research or visualisation project - and help the world wide developer community to make Nebula the best 3D engine on the planet! fully unleashes the power of the Nebula2 graphic features and offers extremely fast turnaround times for game development or realtime visualisation purposes. It will be commercially available in Q3/2004. More information will be available soon. News 01-Apr-2004 Radon Labs is proud to announce that we join the third-party plug-in program for the upcoming 31-Mar-2004 will be shown for the first time at the 2nd Game Developer Party in Essen 2-April-2004 and will be commercially available in Q3/2004. More information will be available soon. German Game Developer Association founded 08-Mar-2004 On saturday 06-Mar-2004 German Game Developers founded the Association of German Game Developers: G.A.M.E.

3. Radon - The Invisible Intruder Office of New York State Attorney General Eliot Spitzer. The Attorney General strives to represent the interests of the citizens of the State with fairness, protect the public from fraud and What http://www.oag.state.ny.us/environment/radon96.html

Home Press Releases Tour the AG's Office Contact the AG's Office ... Index Updated 1-24-03 Radon: The Invisible Intruder Attorney General of New York State by Jeanette E. Barnes, Science Aide Michael H. Surgan, Ph.D., Chief Scientist Environmental Protection Bureau February 1996 Revision Contents Radon: The Invisible Intruder What is radon? What are the health hazards of exposure to radon? How are people exposed to radon? ... Technical Documents Radon: The Invisible Intruder What is radon? Radon is a colorless, odorless, radioactive gas which is created naturally by the breakdown of uranium and radium. Radon gas is continuously released from rocks and soil containing these two elements. Uranium and radium may be found in almost all soil and rock, but are most often associated with those containing granite, shale, and phosphate. Once formed, radon itself decays into other radioactive elements, known as "radon daughters" or "progeny". The rate at which a radioactive element decays is expressed as its half-life. (A half-life is the time it takes for half of a radioactive element in a sample to decay into another element.) Radon has a half-life of about three days; its daughter particles all have half-lives of less than half an hour. What are the health hazards of exposure to radon?

4. Radon: Radioattivitˆ Ambiente E Salute Il radon  un gas radioattivo cancerogeno presente nellÕambiente indoor.(casa scuola lavoro). Aumenta il rischio di tumore (cancro) polmonare. Prevenzione e protezione della salute. http://www.geocities.com/qanto

C'era una volta... Via U. Saba, 83 00144 Roma Tel: 06 5016961 L'angolo dei bimbi Other Links Scriveteci !!! qanto@yahoo.com Date Last Modified: 15 aprile1999

5. Radon Publications - radonSpecific Publications and Resources. Additional here. Breathing Easy What Home Buyers and Sellers Should Know About radon. http://www.epa.gov/iaq/radon/pubs/

Indoor Air - Radon Contact Us Print Version Search: EPA Home Air Indoor Air Radon ... Radon Links Radon-Specific Publications and Resources Additional Indoor Air Quality resources on Asthma, Secondhand Smoke, Schools, Large Buildings and Homes can be found at our Indoor Air Publications site For information on how to order publications from EPA - click here Breathing Easy: What Home Buyers and Sellers Should Know About Radon The video satisfies a long-standing need for a short visual educational tool on how to best include radon in residential real estate transactions. With a bit of light humor, the video covers the basics, including radon science, the lung cancer risk, home inspection, building a new home radon-resistant, testing and fixing a home, disclosure, state radon offices, hotline and web resources, and key radon numbers, e.g., EPA's action level and the U.S. indoor and outdoor averages. The primary audiences are home buyers and sellers, and real estate sales agents and brokers. Home inspectors, mortgage lenders, other real estate practitioners, and radon services providers will also find the video helpful. Single copies of the video are free from IAQ-Info (1-800-438-4318) in VHS, CD and DVD formats [ask for (EPA 402-V-02-003) (TRT 13.10)].

6. Radon EHC is committed to increasing public awareness and knowledge about the health hazards of radon. Home/Community Environment. radon is a radioactive gas. It is formed by the natural widely http://www.nsc.org/ehc/radon.htm

NSC Home News Membership Online Resources ... Environment Radon is a radioactive gas. It is formed by the natural radioactive decay of uranium in rock, soil, and water. Naturally existing, low levels of uranium occur widely in Earth's crust. Radon is colorless, odorless, tasteless, and chemically inert. Once produced, radon moves through the ground to the air above. It can be found in all 50 states. Unless you test for it, there is no way of telling how much is present. The Surgeon General has warned that radon is the second leading cause of lung cancer in the United States. Fact Sheets Radon in Drinking Water Frequently Asked Questions About Radon Biological Effects of Ionizing Radiation (BEIR) VI Report: "The Health Effects ... National Radon Action Week/Month Activity Reports Test Kit Coupon Activity Report (updated quarterly State Activity Report (updated quarterly Educational Materials Test Kit Coupon Documents Available State Radon Contacts State Radon Web Sites ... Public Service Announcement For more information, contact an information specialist at (800) 557-2366 or send us an e-mail message.

7. Radon Division radon Division. radon Video. Part 1 ( Part 2 ( Part 3 ( Part 4 ( Part 5 ( 811KB) KIDS radon video. What You Should Know About radon( pamphlet) 2003 Audio radon Public Service Announcement. 2003 TV radon Public Service Announcement The radon Division ensures public health and safety by increasing public and professional awareness of radon and its http://www.dep.state.pa.us/dep/deputate/airwaste/rp/Radon_Division/Radon_Homepag

Site Navigation Radon Division Radon Video (Requires Flash Part 1 Part 2 Part 3 Part 4 Part 5 KIDS Radon video What You Should Know About Radon (pamphlet) 2003 Audio Radon Public Service Announcement ... 2003 TV Radon Public Service Announcement The Radon Division ensures public health and safety by increasing public and professional awareness of radon and its health risks and by administration of a certification program for radon testing, mitigation, and laboratory analysis individuals and firms. Michael Pyles Division Chief E-Mail: mailto:mpyles@state.pa.us Phone: 717-783-3594 Radon Division Hotline: 800-237-2366 (Pennsylvania only) Statute: Radon Certification Act, act of July 9, 1987 (P.L. 238, No. 43), 63 P.S. Sec. 2001 2014. Statute: Radiation Protection Act, act of July 10, 1984 (PL 688, No. 147), 35 PS Sec. 7110.1017110.703. Statute: Administrative Code of 1929, Section 1920-A (71 PS Sec. 510-20). Regulations: 25 Pa. Code, Environmental Protection, Chapter 240 Radon Certification Radon Services Directory Lists persons certified to perform radon testing, mitigation, and analysis services. Certification is required by law.

8. Visual Elements - Radon Animation, uses, physical information, and key isotopes. http://www.chemsoc.org/viselements/pages/radon.html

Discovered : by F.E. Dorn in 1900. Isolated in Halle, Germany Origin : The name is derived from radium. Description : Radon was first discovered as the gas produced from radium as it decayed in sealed ampoules. It is colourless and odourless, and is chemically inert, but it is dangerous because it gives off alpha rays. There is a detectable amount in the atmosphere, and concentrations can build up indoors in certain localities. Image : Radon home. Click here to see larger version of this image. Radon animation - click the icon above for viewing instructions. QuickTime Player required. For more about Visual Elements animations click here

9. Chemistry : Periodic Table : Radon : Key Information This WebElements periodic table page contains key information for the element radon. radon, radon, radon, radon (emanio), Rádon, radón, radon. http://www.webelements.com/webelements/elements/text/Rn/key.html

Chemistry: WebElements Periodic Table Professional Edition Radon : key information Pro Home Scholar Home Books WebElements CD ... Help Radon radon Radon radon (emanio) Radon Chemistry News Chemistry Forums Chemistry Wiki index Index for radon background Key data; description History radon Wiki radon around us Uses Geology Biology radon compounds Reactions of radon Compounds Bond enthalpies Radii in compounds ... Reduction potentials electronic properties Electronic configuration Ionization energies Electron affinities Electronegativities ... Valence shell radii physical properties Bulk properties (density, resistivity, etc.) Thermal properties (melting point, etc.) Thermodynamic properties crystallography Crystal structure [view VR world] [view pdb image] nuclear properties NMR Naturally occurring isotopes Radioisotopes WebElements Printable periodic table Drive traffic to your site by sponsoring radon WebElements online book store PalmElements for your Palm WapElements for your phone Acknowledgements Help About WebElements WebElements wall chart ... FlashElements Search by keywords: Radon Rn The essentials Name : radon Symbol : Rn Atomic number Atomic weight CAS Registry ID Group number ... Group name : Noble gas Period number Block : p-block Description Here is a brief description of radon.

10. Indoor Air Quality (IAQ) - Radon radon is a radioactive gas. It comes from the natural decay of uranium that is found in nearly all soils. Your home traps radon inside, where it can build up. http://www.epa.gov/radon/

Indoor Air - Radon (Rn) Recent Additions Contact Us Print Version Search: EPA Home Air Indoor Air A to Z Index ... Radon Links Federal Housing Commissioner takes action on radon! In a January 22, 2004 letter, Dr. John C. Weicher, the Federal Housing Commissioner at HUD informed Federal Housing Administration (FHA) mortgagees that its home inspection form (HUD 92564-CN) had been revised. The new form now includes information on radon in indoor air which reiterates the EPA and U.S. Surgeon General testing recommendation and refers readers to EPA’s 1-800-SOS-Radon hotline. The form is mandatory for all FHA insured mortgages. Homebuyers must sign the form before/at the time a sales contract is executed. In fiscal 2003 HUD issued about 1.3 million FHA insured loans. View the Commissioner’s letter ( hud_morgagee_ltr.pdf

11. Indoor Air - Radon - BEIR VI Report - Executive Summary The National Academy of Sciences comprehensive report (1998) on the health efects of radon in homes. A detailed risk model for the US population. Explains how radon causes lung cancer and estimates that in the U.S. it causes 15,400 21,800 lung cancer deaths each year. http://www.epa.gov/iaq/radon/beirvi1.html

Indoor Air - Radon Contact Us Print Version Search: EPA Home Air Indoor Air Radon ... Radon Links BEIR VI - Executive Summary Released to EPA by permission of The National Academy of Sciences (NAS) February 19, 1998 Biological Effects of Ionizing Radiation (BEIR) VI Report: "The Health Effects of Exposure to Indoor Radon" INTRODUCTION This National Research Council's report of the sixth Committee on Biological Effects of Ionizing Radiations (BEIR VI) addresses the risk of lung cancer associated with exposure to radon and its radioactive progeny. Radon, a naturally occurring gas formed from the decay of uranium in the earth, has been conclusively shown in epidemiologic studies of underground miners to cause lung cancer. There is supporting evidence from experimental studies of animals that confirm radon as a cause of lung cancer and from molecular and cellular studies that provide an understanding of the mechanisms by which radon causes lung cancer. In addition to being present at high concentrations in many types of underground mines, radon is found in homes and is also present outdoors. Extensive measurements of indoor radon concentrations in homes show that although concentrations vary widely, radon is universally present, raising concerns that radon in homes increases lung-cancer risk for the general population, especially those who spend a majority of their time indoors at home. For the purpose of developing public policy to manage the risk associated with indoor radon, there is a need to characterize the possible risks across the range of exposures received by the population. The higher end of that range of exposures is comparable to those exposures that caused lung cancer in underground miners. The lower end of that range includes exposures received from an average indoor lifetime exposure which is at least one order of magnitude lower.

12. Environmental Protection Agency Radon (Rn) Environmental Protection Agency radon (Rn) The Indoor Air Quality division of the US Environmental Protection Agency (EPA) presents this Web page dedicated to information about radon, the http://rdre1.inktomi.com/click?u=http://www.epa.gov/iaq/radon/index.html&y=0

13. USGS Radon Information The Energy Resource Surveys Program of the US Geological Survey is no longer engaged in active radon research projects. Other Sources of radon Information. http://energy.cr.usgs.gov/radon/radonhome.html

This page has been accessed times since October 1, 1997. The Energy Resource Surveys Program of the U.S. Geological Survey is no longer engaged in active radon research projects. Information from previously published USGS reports on radon, and links to radon information from other USGS divisions, are available here. Radon in fault and shear zones, eastern United States Radon in glacial deposits of the Upper Midwest County radon potential assessments in the Washington, D.C., area Terrestrial gamma radioactivity of the conterminous United States ... USGS Geologic Information Other Sources of Radon Information Note: the following web sites are not operated by USGS. The High Radon Project-Lawrence Berkeley National Laboratory Radon information from the U.S. EPA (including the National Radon Proficiency Listing) National Safety Council Radon Information Page "Radon Occurrence and Health Risk" by R. William Field, Ph.D., Department of Epidemiology, University of Iowa Hospitals and Clinics The URL of this page is http://energy.cr.usgs.gov/radon/radonhome.html For server information contact Central Energy Data Management Sorry, the server manitainer cannot answer radon-related inquiries

14. RADON.COM -=- The Radon Information Center --- Complete Info On Radon Gas, Radon As the world's largest producer of radon test devices, we offer homeowner DIY test kits for $6.95 each. Quantity discounts available. You found radon. What next? Are you testing large buildings http://www.airchek.com/

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15. RADON.COM -=- The Radon Information Center --- Complete Info On Radon Gas, Radon As the world s largest producer of radon test devices, we offer homeowner DIY test kits for $6.95 each. http://www.radon.com/

Click again To Return) Discounts Info Request Corp. Info Air Chek, Inc. R A D O N C O M Limited Time Offer: Test Kits As Low as $6.95! PRESENTED AS A PUBLIC SERVICE BY 800-AIR-CHEK......(828) 684-0893......FAX(828) 684-8498 1936 Butler Bridge Rd......Fletcher, NC......28732-9365 On-line Test Results Air Chek Pro Website You found radon. What next? Are you testing large buildings or schools? ... Air Chek, Inc.

16. RADON.COM -=- EPA Slideshow For Training Radon Professionals The US EPA s complete set of training slides suitable for anyone wanting to learn about radon and how to control it. The US EPA s http://www.radon.com/radon/radon_EPA.html

The US EPA's complete set of training slides suitable for anyone wanting to learn about radon and how to control it. Learn about our Radon Test Kit Sample an EPA slideshow presentation for Radon Professionals Check out tested radon levels in the U.S., state-by-state Find out which questions we're most often asked (FAQ) ... Order our LOW COST radon test kit - online or enter our weekly drawing for a FREE radon test kit and much much more! Air Chek, Inc.

17. Radon Publications - A Citizen's Guide To Radon Most people are aware that outdoor air pollution can damage their health, but may not know that indoor air pollution can also have significant effects. Over the past several decades, our exposure http://www.epa.gov/iaq/radon/pubs/citguide.html

Radon - Publications Contact Us Print Version Search: EPA Home Air Indoor Air Radon ... Radon Links "A Citizen's Guide to Radon: The Guide to Protecting Yourself and Your Family From Radon (4th ed.)" Co-sponsored by The U.S. Environmental Protection Agency, U.S. Department of Health and Human Services, and the U.S. Public Health Service Office of Air and Radiation Indoor Environments Division (6609J) EPA Document 402-K02-006, Revised May 2002 Contents Overview How Does Radon Get Into Your Home? How to Test Your Home There are Two General Ways to Test for Radon How to Use a Test Kit What Your Test Results Mean Radon and Home Sales Radon in Water How to Lower the Radon Levels in Your Home Radon and Home Renovations The Risk of Living With Radon Radon Risk Charts Radon Myths State Radon Contacts ... How to Order Publications A PDF version of this guidance is also available ( citizensguide4.pdf

18. Applied Techniques Co. Radon Counting Systems And Measurement Instruments Supplies Lucas Celltype radon counting systems for earthquake detection, hydro-dam groundwater leakage, and pollution studies of estuaries and oceans. http://www.atral.com/

Serving The Scientific Community Since 1974 828-696-9510, Hendersonville, NC 28792-Email: R. Lupton rlupton@atral.com Lucas Cell Type Radon Counting Systems This instrumentation is one of several tools, used by Scientists in Earthquake Detection, Hydro-Dam ground-water-leakage, and studies of Estuaries and Oceans for various forms of pollution. Client List includes 27 Major Universities and 28 Governmental Webmaster Current Quick Index to Items Below -Go To Index- May 3, 2004 - Cells - SKA Extraction Systems and Cells (Lucas Type) -Go SKA Extraction Systems- May 3, 2004 Updated - using AT - Radon Systems. May 3, 2004 Updated -Repair Tips - for AT - Radon Systems. May 3, 2004 On-Line -Replacement Manual - Model (AC/DC-DRC-MK10-2) May 3, 2004 Updated -Refurbishing Older AT - Radon Systems. MMay 3, 2004 On-Line -Links - Radon And Other Related References Questions, Tips, or Suggestions - Email: rlupton@atral.com Bob Lupton, Owner Applied Techniques Co. Model AC/DC-DRC-MK10-2 Specifications - Model AC/DC-DRC-MK10-2 The Dual Radon Counting System is housed in an Aluminum Field Container 18"highX 15"wide-X 13"deep with a removable cover.

19. RADON QUESTIONS AND ANSWERS Frequently Asked Questions About radon. This document covers the following topics and questions. Testing Air for radon. Why should I test my home for radon? http://www.nsc.org/ehc/radon/rad_faqs.htm

Environmental Health Center Frequently Asked Questions About Radon This document covers the following topics and questions. To view a particular portion of the document, click on the topic you would like to see. General Questions What is radon? What health effects are associated with radon exposure? What is the "acceptable" level of radon in air? ... How is radon removed from water? General Questions What is radon? Radon is a radioactive gas. It is colorless, odorless, tasteless, and chemically inert. Unless you test for it, there is no way of telling how much is present. Radon is formed by the natural radioactive decay of uranium in rock, soil, and water. Naturally existing, low levels of uranium occur widely in Earth's crust. It can be found in all 50 states. Once produced, radon moves through the ground to the air above. Some remains below the surface and dissolves in water that collects and flows under the ground's surface. Radon has a half-life of about four days - half of a given quantity of it breaks down every four days. When radon undergoes radioactive decay, it emits ionizing radiation in the form of alpha particles. It also produces short-lived decay products, often called progeny or daughters, some of which are also radioactive. Unlike radon, the progeny are not gases and can easily attach to dust and other particles. Those particles can be transported by air and can also be breathed.

20. PRO-LAB :: #1 Selling Brand Of Home Safety Test Kits. Offers environmental test kits for radon gas, carbon monoxide, lead, asbestos, mold, pesticides, anthrax and poor water quality. Provides description of services and order information. http://www.prolabinc.com/

Asbestos is a health hazard in many homes, offices and schools. Asbestos exposure can cause lung cancer. An estimated 20,000 people will die each year for the next 30 years from asbestos exposure. January 21, 2004 Results are in After Toxic Mold Concerns at School. January 28, 2004 Anxiety spreads about mold "We are a full-service Home Inspection Company that exclusively uses PRO-LAB..." "The margin of error on your product compared to the test results using a $7,000 test device makes your Radon Gas Test Kit a clear winner and great value." View all Testimonials Find out where to pick up the test kit YOU need... Home About PRO-LAB Products Contact Us

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