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when mental walls lead to physical walls

The Wall: Photo by
The Wall: Photo by Tanya Harrison

When Mental Walls Lead to Physical Walls was an interactive public art installation for the April 6, 2018 First Friday in downtown Phoenix, Arizona. Phoenix First Fridays are one of the largest monthly art walks in the United States and bring up to 20,000 visitors downtown each month.

The installation was created in collaboration with Darshan Karwat (Assistant Professor, School for the Future of Innovation in Society, Arizona State University) and ASU engineering students Jorge, Cade Lortie, and Migle Varkalaite, with generous assistance from Lortie Construction and funding from the School for the Future of Innovation in Society and The Polytechnic School at Arizona State University.

Motivation & Guiding Questions

The installation was inspired by Darshan’s praxis of activist engineering and his essay Why Engineers Should Refuse to Work on Trump’s Wall responding to US companies who replied as interested vendors to the 2017 solicitations for proposals to design and build Trump’s border wall between the U.S. and Mexico.

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When Mental Walls Lead to Physical Walls

Is engineering political?

Engineers have helped design and build the world you live in. Engineers and engineering are behind your phone, your home, and your ability to navigate life. Engineers also design and build structures like border walls.

What is the social responsibility of engineers in society?

Who do and who should engineers work for?

Come experience and share your thoughts.

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Cuando las Barreras Mentales se Convierten en Barreras Físicas

¿Es la ingeniería política?

Los ingenieros e ingenieras han ayudado al diseño y construcción del mundo en el que vives. La ingeniería está detrás de tu teléfono, tu casa y tu capacidad de navegar la vida. Los ingenieros e ingenieras también diseñan y construyen estructuras como los muros fronterizos.

¿Cuál es la responsabilidad social de los ingenieros e ingenieras en la sociedad?

¿Para quiénes deberían de trabajar los ingenieros e ingenieras?

Ven, experimenta y comparte tus pensamientos.

Footage by Isaac Easley, photos by Tanya Harrison, production by Samantha Lloyd
Footage by Isaac Easley, photos by Tanya Harrison, production by Samantha Lloyd
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Further Reading

Why Engineers Should Refuse to Work on Trump’s Wall

When it comes to Trump’s proposal to build a wall between the U.S. and Mexico (never mind the fact that many such physical barriers already exist),...

slate.com

Why Engineers Should Refuse to Work on Trump’s Wall
Starting up: Our first public project | engineering and border walls

When I wrote Activist Engineering: Changing Engineering Practice by Deploying Praxis, I didn’t know when I’d have the opportunity to start experimenting with the ideas expressed in it in practice. …

reengineered.blog

Starting up: Our first public project | engineering and border walls
When Mental Walls Lead to Physical Walls: The design

This is the second in a series of posts about generating public conversations about the social responsibility of engineers and engineering using the case of border walls as a starting point.  The f…

reengineered.blog

When Mental Walls Lead to Physical Walls: The design
When Mental Walls Lead to Physical Walls: First Showing

This is the third in a series of posts about generating public conversations about the social responsibility of engineers and engineering using the case of border walls as a starting point.  The fi…

reengineered.blog

When Mental Walls Lead to Physical Walls: First Showing

Installation Design

The installation consisted of an imposing 12’ tall and 16’ wide wall to provide a sense of scale for the minimum and desired heights for the proposed border wall (18 and 30 feet, respectively). One side of the wall contained a quote that illustrates how many engineering companies conceive of their work as distanced from social, political, and ecological contexts.

There could be a political backlash, but we are in business to make money and put people to work and provide a good service, whether it’s a wall or substation or airport or prison. We don’t want to approach it from a political standpoint, only from a business standpoint.

— George Ishee, national sales manager for Cast Lighting, based in Hawthorne, New Jersey, who responded as an interested vendor to the border wall solicitation.

The other side was designed to invoke an engineer’s sketches, idea, and other day-to-day technical work. According to Darshan, “separating these two sides [of the installation wall] is meant to represent the wall that engineers build in their heads between the technical work they do, and the lack of consideration of the impacts of their work.”

The Engineer’s Sketchbook: Photo by
The Engineer’s Sketchbook: Photo by Tanya Harrison

The Wall of Thoughts

One end of the wall was designated the Wall of Thoughts, where viewers were encouraged to share their responses to two questions:

1) What is the role of engineers and engineering in society? and

2) What would you like to ask or say to an engineer or company working on the US-Mexico border wall?

Wall of Thoughts: Photo by
Wall of Thoughts: Photo by Tanya Harrison
Selection of responses on the Wall of Thoughts
Selection of responses on the Wall of Thoughts

The Museum of Walls

The final component of the installation provided historical context to the contemporary debate surrounding the US-Mexico border wall. The Museum of Walls provided examples of border walls and barriers around the world, briefly summarized the historical development of the US-Mexico border and traced how the physical barriers changed over time (with a focus on a local Arizona border town), reproduced the specifications listed in the 2017 border wall solicitation, and displayed the recently unveiled border wall prototypes. All installation materials were displayed in English and Spanish, and accessibility copies were available for viewers with vision impairments. The content is reproduced below for reference.

Museum of Walls: Photo by
Museum of Walls: Photo by Tanya Harrison

Museum of Walls | Museo de los Muros

Museum of Walls: Separation and Border Barriers Around the World

Barreras y fronteras de el mundo

Tomas Castelazo, WikiCommons
Tomas Castelazo, WikiCommons
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US-Mexico Border Fence

1990/2007 to Present

654 mi | 18 ft max height

Pedestrian fence & vehicle barriers

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Barrera enre México y Estados Unidos

1990/2007 al presente

654 mi | 18 ft Altura maxima

Cerca para peatones & barreras para vehiculos

Ullstein Bild, Granger Collection
Ullstein Bild, Granger Collection
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Berlin Wall, Germany

1961-1989

93 mi | 11.8 ft avg height

Barbed wire fence & concrete walls

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Muro de Berlin, Alemania

1961-1989

93 mi | 11.8 ft Altura promedio

Cerca de puas & muros de concreto

Patricia Petkosek
Patricia Petkosek
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Peace Lines, Northern Ireland

1969 – 2023 (projected removal)

21 mi total | 25 ft max height

~90 walls of iron, brick, and steel

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Líneas de Paz, Irlanda del Norte

1969 – 2023 (projecto anulado)

21 mi total | 25 ft Altura máxima

~90 muros de hierro, ladrillo y acero

Bor Benedek, Wiki Commons
Bor Benedek, Wiki Commons
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Hungary-Serbia Border Fence

2015 to Present

96 mi | 13 ft max height

Multi-layered fence system & razor wire

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Frontera entre Hungría y Servia

2015 al presente

96 mi | 13 ft Altura máxima

Cerca de multiples estratos & alambre

Muammar Awad, APAImages
Muammar Awad, APAImages
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West Bank Barrier, Israel-Palestine

2002 to Present

283 mi (441 mi expected) | 25 ft max height

Multi-layered fence system & concrete walls

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Barrera del Oeste, Israel-Palestina

2002 al presente

283 mi (441 mi distancia deseada) | 25 ft altura máxima

Cerca de multiples estratos system & muros de concreto

Patrick Hertzog, Getty Images
Patrick Hertzog, Getty Images
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Moroccan Wall (The Bern)

Western Sahara

1980 to Present

1700 mi | 10 ft avg height

Sand & stone walls, trenches, land mines

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Muro de Marruecos

Oeste del Sahara

1980 a la actualidad

1700 mi | 10 ft Altura promedio

Arena & muros de piedra, fosas y minas

Jesus Blasco de Avellaneda, Reuters
Jesus Blasco de Avellaneda, Reuters
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Spain-Morocco Border Fences

Ceuta & Melilla, North Africa 

1995/1998 to Present

5/6 mi | 20 ft max height 

Multi-layered fence system & razor wire

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Frontera entre España y Marruecos

Alambre + Melilla, Afroca del Norte 

1995/1998 a la actualidad

5/6 mi | 20 ft Altura máxima 

Cerca de multiples estratos & alambre

Ramakanta Dey, AP
Ramakanta Dey, AP
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India-Bangladesh Border Fence

1989 to Present

1800+ mi (2110 mi expected)

8 ft avg height

Barbed wire fence

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Cerca entre India y Bangladesh

1989 a la actualidad

1800+ mi (2110 mi distancia esperada)

8 ft Altura promedio

Cerca de alambre de puas

Park Jongwoo, Wired
Park Jongwoo, Wired
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Korean Demilitarized Zone (DMZ)

North Korea–South Korea

1953 to Present

160 mi | Barbed wire fence & 2.5 mi buffer zone, land mines, military fortification

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Zona desmilitarizada de Corea

Corea del norte–Corea del Sur

1953 a la actualidad

160 mi | Alambre de puas & 2.5 mi zona de despeje, minas, fortaleza militar

Eduardo Naddar, AP
Eduardo Naddar, AP
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Rio de Janeiro Favela Walls, Brazil

2009 to Present

7+ mi | 10 ft avg height

Fences & concrete walls

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Muro de las Fabelas de Rio de Janeiro, Brasil 

2009 a la actualidad

7+ mi | 10 ft altura promedio

Cerca + muros de concreto

A Brief History of the US—Mexico Border

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Timeline: Creating and Securing the US-Mexico Border

  • 1821: Mexican War of Independence ends rule of Spain
  • 1846: US annexation of Texas sparks the1846-1848 Mexican-American War; Treaty of Guadalupe Hidalgo ends the war and aims to map the US-Mexico border for the first time
  • 1853: US acquires what is now southern AZ and NM in the Gadsen Purchase, redefining the US-Mexico border line
  • 1896: The final mapping of the US-Mexico Border from 1891-1896 establishes the border line as we know it today
  • 1910: The Mexican Revolution (1910-1920) encourages the US to increase border security and fortification
  • 1924: The US Border Patrol is officially founded; border security increases during the subsequent Great Depression and Prohibition Eras
  • 1994: US Border Patrol implements first National Strategic Plan. Prevention Through Deterrence fortified urban borders with walls, forcing migrants to cross through “hostile terrain” like the Sonoran Desert, killing thousands
  • 2006: Congress passes the Secure Fence Act, allocating $2 billion to construct fencing along 654 of the 1954 miles of the US-Mexico border
  • 2017: US Customs and Border Patrol solicits proposals for solid concrete wall and other border wall prototypes (see nearby poster)

Un poco de la historia de la frontera entre US y Mexico

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Línea del Tiempo: La creación y la proclamación de la frontera

  • 1821: Guerra por la independencia de México acaba con la soberanía española.
  • 1846: La adición de Texas a EEUU desatá la guerra entre Mexico y EEUU de 1846 a 1848; El tratado de Guadalupe Hidalgo pone fin a la guerra y mapea por primera vez la frontera entre ambos países.
  • 1853: EEUU, gracis a la compra de Gadsen, adiciona lo que hoy es la parte sur de AZ y NM. Se redefine la frontera una vez más.
  • 1896: La delineación final de la frontera entre EEUU-Mexico entre 1891 y 1896 establece la frontera actual.
  • 1910: La revolución mexicana (1910-1920) hace que EEUU incremente la seguridad en la frontera
  • 1924: Fundación de la patrulla fronteriza de los Estados Unidos.
  • 1994: La patrulla fronteriza implementa el primer Plan Nacional Estratégico: Prevención mediante disuasión. Este hizo que se construyeran muros que forzaron a los migrantes a pasar por territorios hostiles donde miles perdieron la vida.
  • 2006: Congreso aprueba el “Secure Fence Act”. Transfiere fondos por US$2 billones para construir un muro a lo largo de 654 de las 1954 millas de la frontera.
  • 2017: La aduana y la patrulla fronteriza solicita prototipos para hacer muros de concreto macizo en la frontera. (diríjase al poster cercano).

Close to Home: the Nogales, Arizona and Nogales, Sonora Border

From Lines in the Sand to Border Barriers

Cerca de casa: Los Nogales, Arizona y Los Nogales, la frontera de Sonora.

De líneas en la arena a barreras en la frontera

Special Collections, University of Arizona Libraries
Special Collections, University of Arizona Libraries
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Nogales Border, 1890

The US-Mexico border in Nogales (the large open space) was marked by scattered rock cairns and metal obelisks until 1898.

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Frontera de los Nogales, 1980

La frontera entre USA-Mexico (la banda despojada en la fotografía) se caracterizó por construcciones de metal intermitentes hasta 1898.

Special Collections, University of Arizona Libraries
Special Collections, University of Arizona Libraries
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Nogales Border, 1910-20

In 1898, telephone poles and additional obelisks were added. Here, US and Mexican soldiers patrol the border during the Mexican Revolution.

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Frontera de Nogales, 1910-20

En 1989, se adicionan nuevos postes de telefonía. En la fotografía, soldados de Mexico y USA patrullan la frontera durante la revolución mexicana.

Charles Herbert, Arizona Historical Society
Charles Herbert, Arizona Historical Society
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Nogales Border, 1950

In 1929, after the Mexican Revolution, a 6ft tall chain link fence with barbed wire was built (and later increased to 12ft tall).

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Frontera de los Nogales, 1950

En 1929, después de la revolución Mexicana, una cerca de 6ft de alto con alambre en la parte superior fue construida. Posteriormente se extiende a 12ft de altura.

Jonathan McIntosh, WikiCommons
Jonathan McIntosh, WikiCommons
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Nogales Border, 2009

In 1996, a 10-12 ft wall made out of Vietnam-Era helicopter landing mats and anti-climbing guards replaced the old fence.

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Frontera de los Nogales, 2009

En 1996, un muro hecho de restos de helicópteros de la guerra de Vietnam, reemplazo la cerca vieja.

Alicia Clark, Cronkite News
Alicia Clark, Cronkite News
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Nogales Border, 2015

In 2011, a 23-30ft bollard-style steel wall with 6-10ft concrete foundation was completed. The 2.8 mile wall cost $11.6 million.

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Frontera de los Nogales, 2015

En 2011, un muro de 23-30ft de alto, de acero reforzado, con una base de 10ft de concreto fue construido. El muro de 2.8 millas de largo costó US$11.6 millones.

US-Mexico Border Barriers Today

The US-Mexico border is 1954 miles long. There are currently 654 miles of fencing along the border. Two-thirds of the border has no fencing at all. Only 354 miles have pedestrian fences in place, which  are designed to deter migrants crossing by foot. The remaining 300 miles consist of 3-4 foot tall vehicle barriers. The images below show different types of fences and barriers currently in use.

La frontera entre Mexico y USA se extiende por un total de 1954 millas. Actualmente hay 654 millas de cerca/muro. Dos tercios de la frontera NO tienen ninguna barrera. Solo 354 millas tienen cerca para peatones que desanima a los migrantes de cruzar a pie. Las imágenes de abajo muestran diferentes tipos de rejas, cercas y muros que han sido utilizados.

image
The Wall, USA Today
The Wall, USA Today

Pedestrian Fences — Cerca peatonal

Landing Mat — Estera de metal

Center for Border Patrol, 2011
Center for Border Patrol, 2011

Wire Mesh — Cerca de alambre

Center for Border Patrol, 2011
Center for Border Patrol, 2011

Floating Fence — Reja flotante

USA Today
USA Today

Bollard Style — Estilo bolardo

Center for Border Patrol, 2011
Center for Border Patrol, 2011

Vehicle Barriers — Barreras para vehiculos

Normandie — Normadia

Center for Border Patrol, 2011
Center for Border Patrol, 2011

Post & Rail — Reja & poste

Center for Border Patrol, 2011
Center for Border Patrol, 2011

US Customs and Border Patrol Border Wall Proposals

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Specifications for Wall Proposals

Specifications from US Customs and Border Patrol for Solid Concrete Wall Proposals (solicitation number HSBP1017R0022) and Other Border Wall Proposals (solicitation number HSBP1017R0023)

Threshold Requirements

  1. The wall design shall be reinforced concrete. (This requirement is not in the “Other Border Wall” solicitation.)
  2. The wall design shall be physically imposing in height. The Government’s nominal concept is for a 30-foot high wall. Offerors should consider this height, but designs with heights of at least 18 feet may be acceptable. Designs with heights of less than 18 feet are not acceptable.
  3. It shall not be possible for a human to climb to the top of the wall or access the top of the wall from either side unassisted.
  4. The wall design shall include anti-climb topping features that prevent scaling using common and more sophisticated climbing aids (e.g. grappling hooks, handholds, etc.).
  5. The wall shall prevent digging or tunneling below it for a minimum of 6 feet below the lowest adjacent grade.
  6. The wall shall prevent/deter for a minimum of 1 hour the creation a physical breach of the wall (e.g., punching through the wall) larger than 12-inches in diameter or square using sledgehammer, car jack, pick axe, chisel, battery operated impact tools, battery operated cutting tools, oxy/acetylene torch or other similar hand-held tools.
  7. The north side of wall (i.e. U.S. facing side) shall be aesthetically pleasing in color, anti-climb texture, etc., to be consistent with general surrounding environment. The manufacturing/construction process should facilitate changes in color and texture pursuant to site specific requirements.
  8. The wall design shall be able to accommodate surface drainage.
  9. The wall design shall be able to accommodate Border Patrol approved design standards for pedestrian and automated mechanized vehicle sliding gates (25 feet and 50 feet).
  10. The wall design shall be constructible to slopes up to 45 degrees.
  11. The wall fittings and fixtures shall be secured on the north side of the wall to shield from external attack.
  12. The wall design should be cost effective to construct, maintain and repair.

Objective Requirements

  1. It is operationally advantageous that the design of first 12 feet of wall height (as measured from the highest adjacent grade) be adaptable to prevent/deter for a period of time greater than 1 hour 30 minutes up to 4+ hours the creation of a physical breach of the wall (e.g., punching through the wall) larger than 12-inches in diameter or square using sledgehammer, car jack, pick axe, chisel, battery operated impact tools, battery operated cutting tools, oxy/acetylene torch or other similar hand-held tools.
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Especificaciones para las propuestas de muros

Especificaciones de la Oficina de Aduanas y Protección Fronteriza de los Estados Unidos para las propuestas de muros de concreto sólido (número de solicitud HSBP1017R0022) y para otras propuestas de muros fronterizos (número de solicitud HSBP1017R0023).

  1. El diseño del muro debe ser de concreto reforzado. (Este requerimiento no es parte de las “otras propuestas de muros fronterizos”)
  2. El diseño del muro debe ser físicamente imponente en su altura. El concepto nominal del Gobierno es de un muro de 30 pies de altura. Los concursantes deben considerar esta medida, aunque se tomarán en cuenta los diseños de muros de por lo menos 18 pies de atura. Los diseños con altura de menos de 18 pies no serán aceptados.
  3. No debe ser posible para un humano escalar o acceder a la cima del muro de cualquier lado y sin asistencia.
  4. El diseño del muro debe incluir características como una cubierta anti-ascenso que prevenga su escalamiento con ayuda de equipo de escalada normal y sofisticado (por ejemplo: ganchos de agarre, asideros, etc.)
  5. El muro debe prevenir excavación o la construcción de túneles en por lo menos 6 pies debajo de su punto más bajo.
  6. El muro debe prevenir por mínimo de una hora la creación de una brecha física (ejemplo: perforación del muro) de más de 12 pulgadas cuadradas o de diámetro usando mazos, gatos para coches, piquetas, cinceles, herramientas de impacto operadas por baterías, herramientas para cortar operadas por baterías, antorchas para soldaduras u otras herramientas manuales similares.
  7. La parte norte del muro (el lado que da hacia Estados Unidos) debe ser estéticamente agradable en color, textura anti-escalada, etc., para ser coherente con el ambiente que lo rodea. El proceso de manufactura y construcción debe facilitar cambios en color y textura de acuerdo con los requerimientos de cada sitio.
  8. El diseño del muro debe dar espacio para el desagüe de su superficie.
  9. El diseño del muro debe albergar los estándares autorizados por la Protección Fronteriza para peatones y puertas corredizas para vehículos motorizados automatizados (25 y 50 pies).
  10. El Diseño del muro debe ser construible en terrenos con inclinación de hasta 45 grados.
  11. El equipamiento e instalación del muro debe ser asegurado en la parte norte del muro para proteger un ataque externo.
  12. El diseño del muro debe ser rentable en su construcción, mantenimiento y reparación.

Requisitos Objetivos

  1. Es operacionalmente ventajoso que el diseño de los primeros 12 pies de la altura del muro (medida desde el punto más alto) sea adaptable para prevenir por mínimo de una hora y treinta minutos hasta más de cuatro horas, la creación de una brecha física de más de 12 pulgadas cuadradas o de diámetro usando mazos, gatos para coches, piquetas, cinceles, herramientas de impacto operadas por baterías, herramientas para cortar operadas por baterías, antorchas para soldaduras u otras herramientas manuales similares.

Prototype Designs: Solid Concrete Wall

Prototype designs in San Diego, CA from US Customs and Border Patrol solicitations for Solid Concrete Wall (solicitation number HSBP1017R0022)

Gregory Bull, AP
Gregory Bull, AP
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Caddell Construction

Montgomery, AL

US $344,000 contract

Concrete

Gregory Bull, AP
Gregory Bull, AP
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Fisher Sand & Gravel Co.

Tempe, AZ

US $365,000 contract

Concrete

Gregory Bull, AP
Gregory Bull, AP
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Texas Sterling Construction Company

Houston, TX

US $470,000 contract

Concrete & metal

Gregory Bull, AP
Gregory Bull, AP
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W.G. Yates & Sons Construction Company

Philadelphia, MS

US $453,548 contract

Concrete & metal

Prototype Designs: Other Materials

Prototype designs in San Diego, CA from US Customs and Border Patrol solicitations for Other Border Wall (solicitation number HSBP1017R0023)

Gregory Bull, AP
Gregory Bull, AP
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KWR Construction Inc.

Sierra Vista, AZ

US $486,411 contract

Metal

Gregory Bull, AP
Gregory Bull, AP
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W.G. Yates & Sons Construction Company

Philadelphia, MS

US $458,103 contract

Metal

Gregory Bull, AP
Gregory Bull, AP
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Caddell Construction

Montgomery, AL

US $458,103 contract

Metal & concrete

Gregory Bull, AP
Gregory Bull, AP
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ELTA North America Inc.

Annapolis Junction, MD

US $406,319 contract

Metal & concrete

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