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2. History of radiation protection - Wikipedia

   en.wikipedia.org/wiki/History_of_radiation...

   § 20 § 20 Röntgenverordnung (röv_1987) [§ 20 X-ray Ordinance] (in German) and § Annex+2 Annex 2 (to § 8 para. 1 sentence 1 RöV) (röv_1987) (in German) Depending on the application, nuclear medicine requires even more extensive protective measures, up to and including concrete walls several meters thick.

3. United States five-dollar bill - Wikipedia

   en.wikipedia.org/wiki/United_States_five-dollar_bill

   The United States five-dollar bill (US$5) is a denomination of United States currency. The current $5 bill features U.S. president Abraham Lincoln and the Great Seal of the United States on the front and the Lincoln Memorial on the back. All $5 bills issued today are Federal Reserve Notes. As of December 2018, the average life of a $5 bill in ...

4. List of megaprojects - Wikipedia

   en.wikipedia.org/wiki/List_of_megaprojects

   The longest city tunnel in Europe at 5.5 kilometres (3.4 mi) [citation needed] Denmark/Germany: Fehmarn Belt fixed link: Lolland, Fehmarn: 2021: In progress: €10 billion: An immersed tunnel connection the Danish island of Lolland with the German island of Fehmarn. [citation needed] European Union: TEN-T Core Network: Europe: In progress: More ...

5. Walmart's best Memorial Day deals are finally here: Get up to ...

   www.aol.com/lifestyle/best-walmart-memorial-day...

   LG 70” 4K UHD Smart TV. $498 $648 Save $150. If you've been thinking about upgrading your TV, now would be the right time to do so. Outside of Black Friday, Memorial Day sales offer some of the ...

6. United States ten-dollar bill - Wikipedia

   en.wikipedia.org/wiki/United_States_ten-dollar_bill

   The United States ten-dollar bill (US$10) is a denomination of U.S. currency.The obverse of the bill features the portrait of Alexander Hamilton, who served as the first U.S. Secretary of the Treasury, two renditions of the torch of the Statue of Liberty (Liberty Enlightening the World), and the words "We the People" from the original engrossed preamble of the United States Constitution.

7. CD-RW - Wikipedia

   en.wikipedia.org/wiki/CD-RW

   CD-RW (Compact Disc-Rewritable) is a digital optical disc storage format introduced in 1997. [citation needed] A CD-RW compact disc (CD-RWs) can be written, read, erased, and re-written.