The largest natural contributor to public radiation dose is radon, a naturally occurring, radioactive gas found in soil and rock.

In the United States, the largest public collections are those in the Special Collections of the Free Library of Philadelphia, and the Lloyd Cotsen Children ’ s Library at Princeton University.

When the Boston Braves relocated to Milwaukee in 1953, Selig switched alligences, and eventually became the team's largest public stockholder.

The world's largest state-owned enterprises are traded on the public markets and kept in good health by large institutional investors.

The Church of Hagia Sophia, the sacred palace of the emperors, the hippodrome, and the Golden Gate were among the largest of the many churches, public edifices, and monuments lining the arcaded avenues and squares.

Somerset County Council is responsible for running the largest and most expensive local services such as education, social services, the library, roads, public transport, trading standards, waste disposal and strategic planning, although fire, police and ambulance services are provided jointly with other authorities through the Devon and Somerset Fire and Rescue Service, Avon and Somerset Constabulary and the South Western Ambulance Service.

The Parc de la Ligue Arabe ( formally called Lyautey ) is the city's largest public park.

* The University of Dar es Salaam is the oldest and largest public university in Tanzania.

In the United States, public school teacher unions, most notably the National Education Association ( the largest labor union in the USA ), argue against the idea of school vouchers for concern that it would erode educational standards and reduce funding, and that giving money to parents who choose to send their child to a religious or other school is unconstitutional ; however, the latter issue has been struck down by the Supreme Court case Zelman v. Simmons-Harris, which upheld Ohio's voucher plan in a 5-4 ruling.

* 1852 – The Hermitage Museum in Saint Petersburg, Russia, one of the largest and oldest museums in the world, opens to the public.

In 2010, GM made an initial public offering that was one of the world's top 5 largest IPOs to date.

To date, it remains the largest public assembly of any event in the history of Italy.

Domestic flights: are available through Sunrise Airways which is Haiti's largest airline for the general public offering scheduled, as well as, charter flights.

In 2009, Hong Kong raised 22 percent of worldwide initial public offering ( IPO ) capital, becoming the largest centre of IPOs in the world.

Founded in 1933, the Kowloon Motor Bus Company ( 1933 ) Limited ( KMB ) is one of the largest privately-owned public bus operators in the world.

Iowa State is home to one of the largest campus public art programs in the United States.

In February 1989, opposition to Soviet nuclear testing and its ill effects in Kazakhstan led to the creation of one of the republic's largest and most influential grass-roots movements, Nevada-Semipalatinsk, which was founded by Kazak poet and public figure Olzhas Suleymenov.

Since its inception in 1857, the City Market has been one of the largest and most enduring public farmers ' markets in the midwest, linking growers and small businesses to the Kansas City community.

There were a few institutional or royal libraries which were open to an educated public ( such as the Serapeum collection of the Library of Alexandria, once the largest library in the ancient world ), but on the whole collections were private.

A research library is most often an academic or national library, but a large special library may have a research library within its special field and a very few of the largest public libraries also serve as research libraries.

1996: Pulse Polio Immunization, the largest single day public health event took place on 9th & 20th Jan 1996.

This initiative makes NMU one of the largest public university laptop programs in the world.

The largest protest had 100, 000 participants and, according to polls, 59 percent of the public opposed the move.

Puerto Rico's next largest airports are usually former U. S. Air Force bases converted to public airports.

The town is famed for manufacturing the hardest and densest building bricks in the world, " The Accrington NORI " ( iron ), which were used in the construction of the Empire State Building and for the foundations of Blackpool Tower ; famous for its football team and for having Europe's largest collection of Tiffany Glass.

The Over-the-Rhine Brewery District has the largest collection of pre-Prohibition beer breweries in the U. S.

Its permanent collection, numbering some eight million works, is amongst the largest and most comprehensive in existence and originates from all continents, illustrating and documenting the story of human culture from its beginnings to the present.

As part of its very large website, the museum has the largest online database of objects in the collection of any museum in the world, with 2, 000, 000 individual object entries, 650, 000 of them illustrated, online at the start of 2012.

The British Museum houses the world's largest and most comprehensive collection of Egyptian antiquities, over 100, 000 pieces, outside the Egyptian Museum in Cairo.

The second-floor galleries have a selection of the Museum's collection of 140 mummies and coffins, the largest outside Cairo.

Formerly the Department of the Ancient Near East, with a collection numbering some 330, 000 works, the British Museum possesses by far the world's largest and most important collection of Mesopotamian antiquities outside Iraq.

The museum's collection of Islamic art, including archaeological material, numbers about 40, 000 objects, one of the largest of its kind in the world.

San Diego's Chicano Park, home to the largest collection of murals in the world, was created as an outgrowth of the city's political movement by Chicanos.

One of the largest of these paintings is a view of St. Bartholomew's Church at Lawrie Park Avenue, commonly known as The Avenue, Sydenham, in the collection of the London National Gallery.

In the succeeding dynasty, emperor Qianlong of the Qing Dynasty personally composed 40, 000 poems as part of a 4. 7 million page library in 4 divisions, including thousands of essays, called the Siku Quanshu which is probably the largest collection of books in the world.

Apart from historical collections in general museums, modern works of art in glass can be seen in a variety of museums, including the Chrysler Museum, the Museum of Glass in Tacoma, the Metropolitan Museum of Art, the Toledo Museum of Art, and Corning Museum of Glass, in Corning, NY, which houses the world's largest collection of glass art and history, with more than 45, 000 objects in its collection.

In 2009, Sweden's largest television station, SVT, revealed that IKEA's money — the three per cent collection from each store — does not actually go to a charitable foundation in the Netherlands, as IKEA has said.

Hoover made changes, such as expanding and combining fingerprint files in the Identification Division to compile the largest collection of fingerprints to date.

The collection, among the world's largest, overviews Egyptian life spanning Ancient Egypt, the Middle Kingdom, the New Kingdom, Coptic art, and the Roman, Ptolemaic, and Byzantine periods.

In Aleppo, for example, the largest and probably the oldest mosque library, the Sufiya, located at the city's Grand Umayyad Mosque, contained a large book collection of which 10, 000 volumes were reportedly bequeathed by the city's most famous ruler, Prince Sayf al-Dawla.

The earliest and largest collection of prehistoric musical instruments was found in China and dates back to between 7000 and 6600 BC.

The project is currently available in four languages: Hebrew ( the largest collection ), English, French and Portuguese.

The most massive collection of molecular clouds in the galaxy forms an asymmetrical ring around the galactic center at a radius of 120 parsecs ; the largest component of this ring is the Sagittarius B2 complex.

The more than thirty runic inscriptions on the walls of the chamber represent the largest single collection of such carvings in the world.

At over it is the largest art gallery on campus and the only art museum with a permanent collection in the Upper Peninsula.