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2. Oxygen concentrator - Wikipedia

   en.wikipedia.org/wiki/Oxygen_concentrator

   An oxygen concentrator takes in air and removes nitrogen from it, leaving an oxygen-enriched gas for use by people requiring medical oxygen due to low oxygen levels in their blood. [4] Oxygen concentrators provide an economical source of oxygen in industrial processes, where they are also known as oxygen gas generators or oxygen generation plants .

3. Gateway Greening - Wikipedia

   en.wikipedia.org/wiki/Gateway_Greening

   Gateway Greening's Civic Greening project, Urban Roots, was an annual beautification project for downtown St. Louis. Each year, Gateway Greening staff and volunteers came together with St. Louis Master Gardeners to brighten the downtown landscape with beautiful summer flowers at Kiener Plaza. This program has been suspended due to ongoing ...

4. craigslist - Wikipedia

   en.wikipedia.org/wiki/Craigslist

   This is an accepted version of this page This is the latest accepted revision, reviewed on 2 March 2025. Classified advertisements website Craigslist Inc. Logo used since 1995 Screenshot of the main page on January 26, 2008 Type of business Private Type of site Classifieds, forums Available in English, French, German, Dutch, Spanish, Italian, Portuguese Founded 1995 ; 30 years ago (1995 ...

5. A black market for oxygen concentrators is preying on ... - AOL

   www.aol.com/news/black-market-oxygen...

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6. Chemical oxygen generator - Wikipedia

   en.wikipedia.org/wiki/Chemical_oxygen_generator

   A chlorate candle, or an oxygen candle, is a cylindrical chemical oxygen generator that contains a mix of sodium chlorate and iron powder, which when ignited smolders at about 600 °C (1,100 °F), producing sodium chloride, iron oxide, and oxygen at a fixed rate of about 6.5 man-hours per kilogram of the mixture. The mixture has an indefinite ...

7. Grant's Farm - Wikipedia

   en.wikipedia.org/wiki/Grant's_Farm

   Colonel Dent was a farmer in St. Louis County. He owned 925 acres along Gravois Creek, 10 miles southwest of the city, and owned slaves to farm the land. Five miles from the Dent farm was Jefferson Barracks, where Ulysses S. Grant was assigned in 1843, after attending West Point and rooming with Julia Dent's brother. [2]