Flight 93 National Memorial

9/11 memorial in Pennsylvania, US

Flight 93 National Memorial

The white marble Wall of Names positioned on the flight path

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Location| Stonycreek Township, Somerset County, Pennsylvania, United States
Nearest city| Johnstown, Pennsylvania, United States
Coordinates| 40°3′24″N 78°54′21″W﻿ / ﻿40.05667°N 78.90583°W﻿ / 40.05667; -78.90583
Area| 2,200 ha (8.5 sq mi)1,000 acres (400 ha) federal
Established| September 24, 2002
Visitors| 377,810 (in 2023)
Governing body| National Park Service
Website| Flight 93 National Memorial

Flight 93 National Memorial

U.S. National Register of Historic Places

U.S. National Memorial

Location| 6424 Lincoln Highway, Stoystown, PA 15563, Shanksville vicinity, Stonycreek Township, Somerset County, Pennsylvania, United States
Architect| Paul Murdoch Architects
NRHP reference No.| 04000272[1]
Added to NRHP| September 24, 2002

The Flight 93 National Memorial is a memorial built to commemorate the crash of United Airlines Flight 93, which was one of four aircraft hijacked during the September 11 attacks in 2001. The memorial is located in Somerset County, Pennsylvania, with the vast majority in Stonycreek Township,[2] and with a small portion in Shade Township.[3] It is 78 miles (126 km) southeast of Pittsburgh, 122 miles (196 km) west of Harrisburg (the state capital), and 226 miles (364 km) west of Philadelphia.

A national memorial was created to honor the passengers and crew of Flight 93, who stopped the terrorists from reaching their target by fighting the hijackers. A temporary memorial to the 40 victims was established soon after the crash. The first phase of the permanent memorial was completed, opened, and dedicated on September 10, 2011.[4] The design for the memorial is a modified version of the entry Crescent of Embrace by Paul and Milena Murdoch.

A concrete and glass visitor center opened on September 10, 2015,[4] situated on a hill overlooking the crash site and the white marble Wall of Names.[5] An observation platform at the visitor center and the white marble wall are both aligned beneath the path of Flight 93.[5][6]

## United Airlines Flight 93

[edit]

Main article: United Airlines Flight 93

Of the four aircraft hijacked on September 11, 2001, United Airlines Flight 93 is the only one that did not reach the hijackers' intended target, presumed to be the United States Capitol in Washington, D.C.[7] Several passengers and crew members made cellular telephone calls from the plane and learned about the attacks on the World Trade Center in New York City and the Pentagon in Arlington County, Virginia. As a result, the passengers and crew members decided to mount an assault in order to retake control of the aircraft from the hijackers. The plane crashed in a field in Stonycreek Township about 150 miles (240 kilometers) northwest of Washington, D.C., killing all 44 passengers and crew members, including the four terrorists.

## Temporary memorial

[edit]

External videos

Flight 93 National Memorial,
58:29, C-SPAN[8]
Temporary memorial at the Flight 93 crash site

The crash site was enclosed by a fence and closed to the public except for victims' family members. The temporary memorial was located on a hillside 500 yards (450 meters) from the crash site. The memorial included a 40-foot (12 m) chain-link fence - its length commemorating the 40 passengers and crew - on which visitors could leave flowers, flags, hats, rosaries, and other items. The items were collected by the National Park Service.[9]

Many cities wanted to memorialize the heroes of United Flight 93. Among the first was Marshall, Texas, which by order of the City Commission, named a street "United Flight 93" in early 2002. The keynote speaker was Barbara Catuzzi, the mother of victim Lauren Grandcolas.[10]

Next to the fence were several memorials including a bronze plaque of names, flags, and a large cross. The temporary memorial also included a row of small wooden angels, one for each passenger or crew member. There were also handwritten messages on the guardrails at the memorial.[9] At the memorial site, there was also a small building where visitors could sign a guestbook. The building was staffed by National Park Service volunteers, called ambassadors, who answered questions. In the years following the attacks, approximately 150,000 visitors each year came to the memorial site,[11] a number that reached nearly a million people as of July 2008.[12]

The temporary memorial, for years on land leased for the memorial by Svonavec, Inc., a coal company based in Somerset, Pennsylvania, was moved in 2008 because the company did not renew the lease.[12] It was moved across the road on land that is part of about 900 acres (360 hectares) that the Families of Flight 93 foundation bought in 2008.[12]

## Permanent memorial

[edit]

Flight 93 National Memorial Act

Long title| An Act
To authorize a national memorial to commemorate the passengers and crew of Flight 93 who, on September 11, 2001, courageously gave their lives thereby thwarting a planned attack on our Nation's Capitol, and for other purposes.
Enacted by| the 107th United States Congress
Citations
Public law| Pub. L.Tooltip Public Law (United States) 107–226 (text) (PDF)
Codification
Titles amended| None (uncodified)
Legislative history

* Introduced in the House by John Murtha (D)-PA) on March 7, 2002
* Signed into law by President George W. Bush on September 24, 2002

Wall of Names at the Flight 93 National Memorial A group examines an audiovisual display at the Flight 93 National Memorial visitor center A boulder marks the impact zone of Flight 93

On March 7, 2002, Congressman John Murtha (PA-12) introduced a bill in the United States House of Representatives to establish a National Memorial to be developed by a commission, and ultimately administered by the National Park Service. On April 16, 2002, Senator Arlen Specter (PA) introduced a version of the "Flight 93 National Memorial Act" in the Senate. On September 10, 2002, the bill passed both houses of Congress. The final bill specifically excluded the four hijackers from being memorialized. When signed by President George W. Bush on September 24, 2002, it became Public Law No. 107-226, and the site was listed on the National Register of Historic Places.[13] By September 2005, the Flight 93 Advisory Commission was required to send to the Secretary of the Interior and Congress recommendations for the planning, design, construction, and long-term management of a permanent memorial. The Act also provided for the purchase of any required land from willing sellers.[14]

The Flight 93 National Memorial Campaign is a partnership among the Families of Flight 93, the Flight 93 Federal Advisory Commission, the Flight 93 Memorial Task Force, the National Park Service, the National Park Foundation and many representatives of local, state and national organizations, agencies and interests, as well as people from around the world to build a permanent memorial. Launched in 2005, this public-private partnership sought to raise $30 million from philanthropic individuals, corporations and foundations to enable the construction of the Flight 93 National Memorial. After 14 years of planning and development, the Flight 93 National Memorial was completed and opened to family members of the victims on September 10, 2015.[4][6]

### Land acquisition

[edit]

The boundaries of the National Memorial extend from Lambertsville Road to U.S. Route 30 (Lincoln Highway), where the entrance is located. It is about 2,200 acres (890 ha), of which about 1,000 acres (400 ha) are privately held but protected through partnership agreements. The memorial site itself is a 400-acre (160 ha) bowl-shaped area, with 1,800 acres (730 ha) surrounding as a buffer.[15] In December 2002, landowner Tim Lambert donated 6 acres (2.4 ha) at the crash site and entered discussions with the Conservation Fund regarding an additional 160 acres (65 ha).[16] Using some funds donated from receipts for the film United 93, the Families of Flight 93 organization purchased 3 acres (1.2 ha) in the summer of 2006. The organization sought $10 million in federal funding to use for acquiring land.[15] In November 2006, the Conservation Fund acquired 100 acres (40 ha) as buffer land, to be managed by the Pennsylvania Game Commission.[17] PBS Coals Inc. sold 900 acres (360 ha) to the families' organization in March 2008.[18]

Svonavec, Inc. owned a 275-acre (111 ha) parcel, which was a reclaimed strip-mine. Michael Svonavec, working with appraiser Randall Bell, submitted a letter to the National Park Service in November 2003 with plans to build a museum and visitor's center on his land. Although the other property owners had sold their land for the memorial, Svonavec believed that the crash had increased the property value of its land to $23.3M, while the government only recognized the land as being worth its original value of $610,000. The Flight 93 Advisory Committee and the Families of Flight 93 wrote a letter to President George W. Bush, asking him to issue an Executive Order which would authorize the use of eminent domain to secure the land.[19] Instead, Pennsylvania Senators pushed an amendment through Congress which allowed the Department of the Interior to seize the land by eminent domain.[20] The question of compensation was unsolved, and so the case of United States v 275.81 Acres of Land was brought before a federal district court to determine proper compensation for the property. The court-appointed Commission concluded that the appropriate compensation was $1,535,000.[21]

### Design competition

[edit]

#### Design selection

[edit]

Visitor shelter at the Flight 93 National Memorial

The commission decided to select the design for the memorial through a multi-stage design competition funded by grants from the Heinz Foundations and the John S. and James L. Knight Foundation. The competition began on September 11, 2004; over 1,000 entries were submitted online.[22] In February 2005, five finalists were selected for further development and consideration. The 15-member final jury included family members, design and art professionals, and community and national leaders. After three days of review and debate, they announced the winner on September 7, 2005: Crescent of Embrace by a design team led by Paul and Milena Murdoch of Los Angeles.[11]

The design featured a "Tower of Voices", containing 40 wind chimes - one for each passenger and crew member who died. A crescent would have been formed by a circular pathway lined with red maple trees that follows the natural bowl shape of the land. Forty groves of red and sugar maples and eastern white oak trees were to be planted behind the crescent. A black slate wall would mark the edge of the crash site, where the victims are buried.

Benches facing the Wall of Names and crash site

Bloggers and religious groups criticized the new design.[23] Jury member Tom Burnett Sr., whose son was killed in the crash, said he made an impassioned speech to his fellow jurors about what he felt the crescent represented. "I explained this goes back centuries as an old-time Islamic symbol ... I told them we'd be a laughing stock if we did this", Burnett said.[24] Representative Tom Tancredo of Colorado opposed the design's shape "because of the crescent's prominent use as a symbol in Islam". Mike Rosen of the Rocky Mountain News wrote: "On the anniversaries of 9/11, it's not hard to visualize al-Qaeda celebrating the crescent of maple trees, turning red in the fall, "embracing" the Flight 93 crash site. To them, it would be a memorial to their fallen martyrs. Why invite that? Just come up with a different design that eliminates the double meaning and the dispute".[25] The architect asserted that the alignment was coincidental and that there was no intent to refer to Muslim symbols, with which several victims' families agreed.[26] Al-Qaeda and its affiliated Jihadist groups belong to the Salafi movement, which generally does not consider the crescent to be a symbol of Islam, viewing it as a later innovation of purportedly less pious empires.[27]

Others criticized the design as too non-representational. James Lileks, a journalist and architectural commentator, wrote:[28]

> We don't need giant statues of the guys ramming the drink cart into the door. But pedantic though such a monument might be, future generations would infer the plot. All you get from a Crescent of Embrace is a sorrowful sigh of all-encompassing grief and absolution, as if the lives of all who died on that spot were equal in tragedy. They were not.

#### Modified design

[edit]

The gate to the crash site Map of the site overlaid by the flight path of United 93

In response to criticism, the designer agreed to modify the plan. The architect believes that the central elements can be maintained to satisfy criticism. "It's a disappointment there is a misinterpretation and a simplistic distortion of this, but if that is a public concern, then that is something we will look to resolve in a way that keeps the essential qualities", Murdoch said in a telephone interview to the Associated Press.[29]

The redesigned memorial has the plain shape of a circle, as opposed to a crescent. The circle's design is bisected by the flight's trajectory, which is marked by a clearing in the trees. The new design was supposed to emphasize the area of impact.[30] According to the memorial's architect, Paul Murdoch:[31]

> ... a walkway approaches from an arrival court along the edge of and overlooking the Sacred Ground. The walkway eventually widens in from a ceremonial gate . and the wall of names, composed of 40 panels of 3-inch-thick (7.6 cm) slabs of polished white granite, 8 feet (2.4 m) tall, each inscribed with a name of the 40 heroes. Two walls flanking the gate are clad in polished white granite and the flight path is paved with black granite. Beyond the gate is the impact site ... planted with wildflowers, and the hemlock grove beyond.

### Construction

[edit]

#### Phase 1: Wall of Names

[edit]

The wall marking the northern edge of the crash site at the Flight 93 National Memorial

The cost of the permanent memorial is estimated at $60 million. As of March 2011, $20 million in private donations had been raised, the Commonwealth of Pennsylvania was providing $18.5 million, and Congress had appropriated $10 million;[32] the families of the victims of Flight 93 urged Congress to appropriate $3.7 million more in the fiscal year 2012 budget.[32] The permanent memorial was originally planned for dedication on September 11, 2011;[33] however, the pace of construction was delayed due to, among other factors, shortage of funding and the general economic downturn in America.

Ground was broken on November 8, 2009, at a ceremony led by Secretary of the Interior Ken Salazar and attended by Governor Ed Rendell, Senator Bob Casey, and Representatives John Murtha and Bill Shuster, as well as National Park officials, first responders, and family members of the passengers.[34] The Wall of Names was completed in 2011.[35]

#### Phase 2: Tower of Voices

[edit]

Tower of Voices, 93-foot tall tower built to commemorate the 40 passengers with one wind chime for each

In 2017, construction of a 93 ft (28 m)-tall monumental "Tower of Voices" began. The tower contains 40 wind chimes - one for each passenger and crew member who died in the crash, but none for the terrorists as they were responsible for the hijacking. The tower forms the gateway to the National Memorial and is visible from U.S. Route 30. The largest such structure ever built, the precast concrete tower supports polished aluminum chimes varying in length from 5 feet (1.5 m) to 10 feet (3.0 m) and varying tonalities (voices). The tower, built from 274 short tons (249 t) of concrete and steel, was constructed by L.S. Fiore.[36] The pitch of the chimes was conceived by composer Samuel Pellman and constructed by a wind engineering consultant, an acoustics engineer, and a musical instruments fabricator. Prototypes were tested in Simi Valley, California, Morton, Illinois, and the desert in Arizona - sites with similar wind conditions as the memorial, which is located in an area of relatively high average wind speeds and has wind farms nearby.[37][38]

Construction of the main tower was completed in 2018 and eight of the forty wind chimes were installed.[39] In September 2020, the remaining wind chimes were installed by ARCH Production & Design NYC[40][41] along with the mechanism that allows them to ring.[37]

### Dedication

[edit]

Parts of this article (those related to the status of phases 1 & 2) need to be updated. Please help update this article to reflect recent events or newly available information. (April 2019)

|

Flag flying over memorial plaza, with Flight 93 National Memorial visitor center in background

The first phase of the memorial was dedicated on September 10, 2011, at a public ceremony attended by Vice President Joe Biden, former presidents George W. Bush and Bill Clinton, Speaker of the House John Boehner, other dignitaries and family members of the passengers, and thousands of others.[42][43] During the ceremony, Clinton announced that he and Boehner would launch a fundraising effort to raise the $10 million required to complete the memorial.[44][45] Singer/songwriter Sarah McLachlan performed both "Angel" and "I Will Remember You" at the dedication ceremony. The Bells of Remembrance were tolled 40 times, once for each of the passengers and crew as their names were read, a tradition from the annual September 11 observance.

The Tower of Voices was dedicated on September 9, 2018.[46]

On June 21, 2018, all recovered wreckage from the hijacked Boeing 757 was transported via shipping containers to the crash site where the 757 was buried in a private ceremony for the first responders to the crash, as well as families of the passengers and crew.[47]

## See also

[edit]

* U.S. Route 219 in Pennsylvania – a portion of this highway, running close to the crash site, was co-signed as the Flight 93 Memorial Highway in 2007.
* National September 11 Memorial & Museum
* Pentagon Memorial
* Victims of Terrorist Attack on the Pentagon Memorial
* List of national memorials of the United States

## References

[edit]

1. ^ "National Register Information System". National Register of Historic Places. National Park Service. July 9, 2010.
2. ^ "2020 CENSUS - CENSUS BLOCK MAP: Stonycreek township, PA" (PDF). U.S. Census Bureau. Retrieved March 16, 2023. "Flight 93 Natl Meml"
3. ^ "2020 CENSUS - CENSUS BLOCK MAP: Shade township, PA" (PDF). U.S. Census Bureau. Retrieved March 16, 2023. "Flight 93 Natl Meml"
4. ^ a b c "Flight 93 National Memorial - Sources and Detailed Information". nps.gov. National Park Service. n.d. Retrieved January 31, 2017. "13\. When will the Memorial be finished?"
5. ^ a b "Flight 93 National Memorial - Frequently Asked Questions (FAQs)" (PDF). nps.gov. National Park Service. May 2013. pp. 22–23. Retrieved January 31, 2017.
6. ^ a b "A Long Road to a Place of Peace for Flight 93 Families". The New York Times. September 9, 2015. Retrieved September 9, 2015.
7. ^ "Al-Jazeera offers accounts of 9/11 planning". CNN. September 12, 2002. Archived from the original on February 20, 2006. Retrieved August 23, 2008.
8. ^ "Flight 93 National Memorial". C-SPAN. May 19, 2016. Retrieved September 11, 2016.
9. ^ a b Curl, Joseph (September 10, 2002). "Visitors flock to Flight 93 crash site". The Washington Times.
10. ^ Minutes of the Marshall City Commission, November 2001
11. ^ a b Goldstein, Steve (September 8, 2005). "Memorial to Flight 93 finalized; "The Crescent of Embrace" will honor the passengers and crew who died in Shanksville, Pa., on 9/11. It's "a place to heal."". The Philadelphia Inquirer.
12. ^ a b c Hamill, Sean D. (July 28, 2008). "Land Dispute Moves Memorial for 9/11 Victims Across a Pennsylvania Road". The New York Times. Retrieved September 1, 2009.
13. ^ "Flight 93 National Memorial Act (P.L. 107-226)" (PDF). National Park Service, U.S. Department of the Interior. September 24, 2002. Retrieved October 3, 2014.
14. ^ Flight 93 National Memorial Act, H.R. 3917, 107th Cong. (2002).
15. ^ a b Worden, Amy (September 10, 2006). "Flight 93 memorial gets momentum; The purchase of land near Shanksville, Pa., began with "a first small step" of three acres". The Philadelphia Inquirer.
16. ^ Levin, Steve (December 6, 2002). "Flight 93 memorial gets a lift". Pittsburgh Post-Gazette. Archived from the original on May 4, 2021. Retrieved May 3, 2021.
17. ^ "100 acres (0.40 km2) near Flight 93 memorial is acquired". The Philadelphia Inquirer. November 2, 2006.
18. ^ Hamill, Sean D. (March 19, 2008). "Flight 93 Memorial Effort Gains Over 900 acres". The New York Times. ISSN 0362-4331. Retrieved August 5, 2008.
19. ^ National Park Service, Flight 93 Memorial Task Force and Flight 93 Advisory Commission Briefing Reports (2009)
20. ^ Consolidated Appropriations Act, H.R. 2764, 110th Cong. (2007), 2122
21. ^ United States v 275.81 Acres of Land, More or Less, Situated in Stonycreek Twp., 275 F Supp 2d 8 (WD Pa 2014).
22. ^ Lake, Alison (November 10, 2006). "Field of Honor". Public CIO magazine. Government Technology.[permanent dead link]
23. ^ Jennifer Lucchino (October 1, 2005). "'Crescent of Embrace' chosen for Flight 93 Memorial design". Architectural Record. Archived from the original on June 12, 2011. Retrieved September 17, 2009.
24. ^ Paula Reed Ward (September 16, 2005). "Designer of Flight 93 memorial receptive to changes". Pittsburgh Post-Gazette. Retrieved August 23, 2008.
25. ^ Mike Rosen (September 22, 2005). "Let's roll, sans crescent". Rocky Mountain News. Archived from the original on December 14, 2005. Retrieved August 23, 2008.
26. ^ Hamill, Sean D. (May 4, 2008). "Design of a memorial to Flight 93 keeps families sparring". The New York Times. Retrieved December 24, 2009.
27. ^ Salih Al-Munajjid, Muhammed. "Taking the crescent as a symbol". Islam Question & Answer. Islam Q&A. Retrieved September 12, 2021.
28. ^ "September 11th Memorials — The Construction Continues". Archived from the original on October 6, 2014. Retrieved October 4, 2014.
29. ^ Swauger, Kirk (September 15, 2005). "Flight 93 design provokes uproar". The Tribune-Democrat. Retrieved May 3, 2021.
30. ^ "A 9/11 Tribute Loses Its Crescent Shape". The New York Times. Associated Press. December 1, 2005. Retrieved November 25, 2015.
31. ^ "New Image of Flight 93 National Memorial Unveiled". Flight 93 National Memorial. May 4, 2009
32. ^ a b Laura Ingle. "Families of United Flight 93 Heroes Call on Congress to Approve $3.7 Million More in Memorial Funding". Fox News. Retrieved October 4, 2014.
33. ^ Smith, Sonia (September 11, 2006). "Monuments in the making Across the nation, tributes big, small are under way". The Dallas Morning News.
34. ^ "Ground Breaking Ceremony". National Park Service. October 28, 2009.
35. ^ Taylor, Alan. "9/11: The Flight 93 National Memorial - The Atlantic". www.theatlantic.com. Retrieved May 3, 2021.
36. ^ Hurst, David (September 10, 2018). "PHOTO GALLERY | Tower dedication honors voices silenced by Flight 93 tragedy". The Tribune-Democrat. Retrieved February 27, 2021.
37. ^ a b Miranda, Carolina A. (September 10, 2020). "How L.A. architect Paul Murdoch designed a 9/11 memorial that literally sings". Los Angeles Times. Retrieved May 3, 2021.
38. ^ "Wind Energy in Pennsylvania". WINDExchange. United States Department of Energy \- Office of Energy Efficiency and Renewable Energy. Retrieved June 8, 2021.
39. ^ US National Park Service, Tower of Voices, Accessed November 4, 2017
40. ^ ARCH NYC installs 40 custom chimes in the 93 foot "Tower of Voices" on YouTube
41. ^ "Flight 93 "Tower of Voices"".
42. ^ Seelye, Katharine Q. (September 10, 2011). "In Shanksville, Thousands Gather to Honor Flight 93 Victims". The New York Times. ISSN 0362-4331. Retrieved May 3, 2021.
43. ^ Seelye, Katharine Q. (September 11, 2011). "In Pennsylvania, a Wall of Names". The New York Times. ISSN 0362-4331. Retrieved May 3, 2021.
44. ^ "September 11, 2011 Weekend". National Park Service. Archived from the original on June 29, 2011. Retrieved July 6, 2011.
45. ^ "MSNBC Live Broadcast of the ceremony and reported news". MSNBC News. Archived from the original on September 10, 2011. Retrieved September 10, 2011.
46. ^ "September 9 Tower of Voices Dedication - Flight 93 National Memorial (U.S. National Park Service)". www.nps.gov. Retrieved February 27, 2021.
47. ^ Shanksville, Mailing Address: P. O. Box 911; Us, PA 15560 Phone: 814 893-6322 Contact. "National Park Service to Return the Remaining Flight 93 Wreckage to the Crash Site - Flight 93 National Memorial (U.S. National Park Service)". www.nps.gov. Retrieved May 11, 2023.`{{cite web}}`: CS1 maint: numeric names: authors list (link)

## External links

[edit]

Wikimedia Commons has media related to Flight 93 National Memorial.

* Official website
* Flight 93 National Memorial Campaign
* Brief bios of passengers and crewmembers Archived February 17, 2017, at the Wayback Machine
* Public Law No. 107-226
* Pennsylvania memorial

* v
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Protected areas of Pennsylvania

Federal|

| NPS National Historical Parks
& National Historic Sites|

* Allegheny Portage Railroad NHS
* Edgar Allan Poe NHS
* Eisenhower NHS
* First State NHP
* Friendship Hill NHS
* Gloria Dei (Old Swedes') Church NHS
* Hopewell Furnace NHS
* Independence NHP
* Steamtown NHS
* Valley Forge NHP

|

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Wilderness areas|

* Allegheny Islands
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* Allegheny National Recreation Area
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* Lower Delaware National Wild and Scenic River
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State|

| Natural Areas|

* Alan Seeger
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* Bald Eagle
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Scenic Rivers|

* Bear Run
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* Lick Run
* Lower Brandywine
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State Game Lands|

* 12
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Wild areas|

* Algerine
* Asaph
* Burns Run
* Clear Shade
* Hammersley
* James C. Nelson
* Kettle Creek
* Russell P. Letterman
* Martin Hill
* McIntyre
* Penns Creek
* Quebec Run
* Quehanna
* Russell P. Letterman
* Square Timber
* Stairway
* Thickhead Mountain
* Trough Creek
* Wolf Run

Other|

* Laurel Highlands Hiking Trail
* Mohn Mill Ponds Wild Plant Sanctuary
* Stone Valley Recreation Area

Local and private|

* Abernathy Field Station
* Asbury Woods
* Beechwood Farms Nature Reserve
* Benjamin Olewine III Nature Center
* Boyce Park Nature Center
* Briar Bush Nature Center
* Carbon County Environmental Education Center
* Churchville Nature Center
* Endless Mountains Nature Center
* Fern Hollow Nature Center
* Frick Environmental Center
* Great Valley Nature Center
* Harrison Hills Park Environmental Education Center
* Hawk Mountain Sanctuary
* Honey Hollow Environmental Education Center
* Jarrett Nature Center
* John James Audubon Center at Mill Grove
* Lacawac
* Lancaster Environmental Center
* Latodami Nature Center at North Park
* McKaig Nature Education Center
* McKeever Environmental Learning Center
* Millbrook Marsh Nature Center
* Kettle Creek Environmental Education Center
* Myrick Conservation Center
* Ned Smith Center for Nature and Art
* Nurture Nature Center
* Peace Valley Nature Center
* Pocono Environmental Education Center
* Pool Wildlife Sanctuary
* Powdermill Nature Reserve
* Richard Nixon Park Nature Center
* Riverbend Environmental Education Center
* Shaver's Creek Environmental Center
* Silver Lake Nature Center
* South Park Nature Center
* Strawberry Hill Nature Center
* Tom Ridge Environmental Center
* Trexler Environmental Center
* Trexler Nature Preserve
* Tyler Arboretum
* Welkinweir
* Whites' Woods Nature Center
* Winnie Palmer Nature Reserve at Saint Vincent College
* Woodbourne Forest and Wildlife Preserve
* Woodcock Creek Nature Center

* Category
* Pennsylvania Department of Conservation and Natural Resources
* Philadelphia
* Pittsburgh
* Commons

* v
* t
* e

US National Register of Historic Places in Pennsylvania

Topics|

* Contributing property
* Keeper of the Register
* Historic district
* History of the National Register of Historic Places
* National Park Service
* Property types

Lists by county|

* Adams
* Allegheny
* Armstrong
* Beaver
* Bedford
* Berks
* Blair
* Bradford
* Bucks
* Butler
* Cambria
* Cameron
* Carbon
* Centre
* Chester
* East
* North
* South
* Clarion
* Clearfield
* Clinton
* Columbia
* Crawford
* Cumberland
* Dauphin
* Delaware
* Elk
* Erie
* Fayette
* Forest
* Franklin
* Fulton
* Greene
* Huntingdon
* Indiana
* Jefferson
* Juniata
* Lackawanna
* Lancaster
* Lawrence
* Lebanon
* Lehigh
* Luzerne
* Lycoming
* McKean
* Mercer
* Mifflin
* Monroe
* Montgomery
* Montour
* Northampton
* Northumberland
* Perry
* Philadelphia
* Pike
* Potter
* Schuylkill
* Snyder
* Somerset
* Sullivan
* Susquehanna
* Tioga
* Union
* Venango
* Warren
* Washington
* Wayne
* Westmoreland
* Wyoming
* York

Lists by city|

* Pittsburgh
* Lancaster
* Philadelphia
* Center City
* North
* Northeast
* Northwest
* South
* Southwest
* West

Other lists|

* European archaeological sites
* Native American archaeological sites
* Bridges (covered)
* National Historic Landmarks (Philadelphia)

* Category
* NRHP portal

* v
* t
* e

United Airlines Flight 93

Core topics|

* Newark Liberty International Airport
* Flight 93 conspiracy theories

Crew or passengers|

* Todd Beamer
* Mark Bingham
* Tom Burnett
* Jeremy Glick
* Lauren Grandcolas
* LeRoy Homer Jr.

Hijackers|

* Ziad Jarrah
* Ahmed al-Nami
* Saeed al-Ghamdi
* Ahmed al-Haznawi

Crash locations|

* Shanksville, Pennsylvania
* Somerset County, Pennsylvania
* Stonycreek Township, Somerset County, Pennsylvania

Films|

* United 93
* Flight 93
* The Flight That Fought Back
* I Missed Flight 93

Memorials|

* Flight 93 National Memorial
* Temporary memorial
* Mall of America
* Flight 93 Memorial Highway
* West Coast Flight 93 Memorial
* USS Somerset

Miscellaneous|

* Let's roll
* Delta Air Lines Flight 1989
* Korean Air Flight 85
* Steven O'Brien
* Flight of Valor

* Wikinews
* Commons
* Category

* v
* t
* e

September 11 attacks

Timeline|

* Planning
* September 11, 2001
* World Trade Center collapse
* Remainder of September
* October
* Post-October

Victims|

* Casualties
* List
* A–G
* H–N
* O–Z

Hijacked airliners|

* American Airlines Flight 11
* United Airlines Flight 175
* American Airlines Flight 77
* United Airlines Flight 93
* Suspected hijackings
* Korean Air Flight 085
* Delta Air Lines Flight 1989

Crash sites|

* World Trade Center
* site
* The Pentagon
* Stonycreek / Shanksville, Pennsylvania

Aftermath|

* Immediate repercussions
* artwork destroyed
* closings and cancellations
* detentions
* Communication
* Post-9/11
* economy
* local health
* airport security
* Reactions
* conspiracy theories
* Rudy Giuliani
* Unsuccessful terrorist plots

Response|

* U.S. government response
* U.S. military response
* War on terror
* Afghanistan
* North-West Pakistan
* Rescue and recovery effort
* maritime response
* Financial assistance
* Operation SUPPORT
* Operation Yellow Ribbon
* Memorials and services
* 9/11 Memorial and Museum
* Flight 93 National Memorial
* Pentagon Memorial
* Victims of Terrorist Attack on the Pentagon Memorial
* World Trade Center Health Program
* Killing of Osama bin Laden
* Killing of Ayman al-Zawahiri

Perpetrators|

* Responsibility
* Al-Qaeda
* Osama bin Laden
* Alleged Saudi role
* Motives
* Hijackers
* 20th hijacker
* Hamburg cell
* Trials

Inquiries|

* U.S. congressional inquiry
* the 28 pages
* September 11 intelligence before the attacks
* August 2001 CIA warning
* Phoenix Memo
* 9/11 Commission
* Commission Report
* criticism
* NIST investigation
* PENTTBOM
* ThinThread

Cultural effects|

* Cultural references
* songs
* comics
* books
* Cartoonists Remember 9/11
* Entertainment affected
* Humor
* Lost artworks
* Clear Channel memorandum

Miscellaneous|

* War games
* Patriot Day
* The Falling Man
* Impending Death
* Dust Lady
* Raising the Flag at Ground Zero
* View from Williamsburg, Brooklyn, on Manhattan, 9/11
* Tourist Guy hoax
* Iraq War
* Twin Towers II
* Disappearance of Sneha Anne Philip
* Disappearance of Michele Anne Harris
* Murder of Balbir Singh Sodhi
* Killing of Henryk Siwiak
* Mark Anthony Stroman
* Larme Price
* Rudi Dekkers
* Alicia Esteve Head
* Jersey Girls
* Emma E. Booker Elementary School
* Media documentation

* Category
* WikiProject

Authority control databases |

* VIAF

|

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