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  2. High altitude breathing apparatus - Wikipedia

    en.wikipedia.org/wiki/High_altitude_breathing...

    Bottled oxygen, more broadly known as high pressure compressed oxygen, medical oxygen, and aviator's oxygen, is oxygen in small, portable, high-pressure storage cylinders. For aviation, the weight of the cylinder is usually not critical, and the choice of material may be affected by economic considerations such as purchase price and useful ...

  3. Ohio to Erie Trail - Wikipedia

    en.wikipedia.org/wiki/Ohio_to_Erie_Trail

    The Ohio to Erie Trail is a dedicated multi-use trail crossing Ohio from southwest to northeast, crossing 326 mi (525 km) of regional parks, nature preserves, and rural woodland. The trail, named after its endpoints, extends from the Ohio River at Cincinnati to the Lake Erie at Cleveland , primarily integrating former rail trails and multi-use ...

  4. Olentangy Trail - Wikipedia

    en.wikipedia.org/wiki/Olentangy_Trail

    The Olentangy Trail, also known as the Olentangy Greenway Trail is a 13.6-mile multi-use greenway trail in Columbus, Ohio, United States. [1] The route is along the banks of the Olentangy River . The trail connects the Scioto Greenway Trail in downtown Columbus with Worthington Hills Park in Worthington, Ohio .

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  6. Columbus and Franklin County Metro Parks - Wikipedia

    en.wikipedia.org/wiki/Columbus_and_Franklin...

    Located near Lewis Center, the park was named for large shale bluffs that overlook the Olentangy River. Within the park is a large nature center, a sledding hill, a Natural Play Area where off trail activity is permitted, Adena culture mounds, and the Edward F. Hutchins State Nature Preserve.

  7. Effects of high altitude on humans - Wikipedia

    en.wikipedia.org/wiki/Effects_of_high_altitude...

    Mitigation may be by supplementary oxygen, pressurisation of the habitat or environmental protection suit, or a combination of both. In all cases the critical effect is the raising of oxygen partial pressure in the breathing gas. [1] Room air at altitude can be enriched with oxygen without introducing an unacceptable fire hazard.

  8. Rock House Reservation - Wikipedia

    en.wikipedia.org/wiki/Rock_House_Reservation

    Its location near two, long Native American footpaths suggests that it may also have been a trail camp and meeting place. The Rock House Reservation is located off Massachusetts Route 9 and offers 3 miles (4.8 km) of hiking trails, an interpretive center, a butterfly garden, and scenic vistas. Boulder strewn Carter Pond occupies the center of ...

  9. Scioto Greenway Trail - Wikipedia

    en.wikipedia.org/wiki/Scioto_Greenway_Trail

    The Scioto Greenway Trail is a multi-use greenway trail in Columbus, Ohio, United States. [1] The route is along the downtown riverfront on the east and west sides of the Scioto River . It is the first such bike trail to have been built in Columbus.