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-..--,-..-~----"---- 27, 1991-3 L-Guess Who's Fort>' Love Frank, Tish Tara and Steve Letz'er to Editor Dear Editor:. company, Shield Source hIc., has Ontario Hydro hias lahded its first already received its first shipment tritium contract. A Peterborough of pure tritiumn gas. Of course, due to financiai and occu1pati0flI health concernis, the cargo Nwas encl osed in a specially designed container. At up to $34,000 pe~r gram tritium is the worlds mpoýst expensive commodity. And w0itis ability to migrate through som)e solids tritium' can prove difficuit to Coftaifl. In addition, the estirilated acutely lethal dose of tritiurîj absorbed into the body is about 8 to 24 curies (a measure of radioactiývitY). Smaller doses can cause gent-tic damage. The first Shield ,ource tritium shipment was repérted to be "no more than 5 gram5'. At almost 10,000 curies per gram,' this is a significant amoflfit. Special containers, make perýfect sense. It's the next st ep which Makes no sense at ali. Once in possesýion' Shield Source will remove tfie tritium from the special contaner, deposit the, tritium inside glass tubes, assemble these into exit sig115 and market these to an unprdtect& public. Tritium sîgns do flot corne with built-in radiaticeP monitors or alarms. Unless sigrus are obviously damaged, passers-bY would be totally unawflre if small tritium leaks did occur. Tpe U.S. National Council on Radioffgical Protection has recommendèd a maximum permissible public inhalation exposure of 0.1 mflilcuie per year. This is about one millionth of the amount of tritiurfi contained in a typical exit sign. Tritium exit sîgns are easily identified by a chêracteristic green glow. For more jifonnation contact Durham Nuclear Awareness (DNA), 725-1565. jeif Brackett -MRBULDIN-G1DI5 SUPPLIES -HOMECARE BUILDING CENTRE Store Hours Monday - Saturday 8:00 a.m.- 6:00 p-. Friday - 8:00 a.m. - 9:00 p.m. 1 Pr -Fin shedD R Y Mini Barn WALL1 8'x8' 3.90o A U5Oooa sheet Corne in and apply for our new Durham Building Supply "GOLD CARD" A FREE $25.00 Gift Certif icate on approval of your new accouflt. Durham Building Suple "For AiYour BuildingNeeds" 164 Baseline Road, Bowmanville 623-6341