Avon Barrier Company
We offer a wide range of vehicle and pedestrian access control systems such as parking barriers, road blockers, gate systems, turnstiles, high security equipment and revenue systems
http://www.avon-barrier.co.uk/

EU Trade Barriers Kill
A study demonstrating how the trade barriers of EU affect the poor countries, published by the Centre for the New Europe.
http://www.cne.org/pub_pdf/2003_09_04_EU_barriers_kill.pdf

Barriers & Bollards Limited
Bollards, Bollard Systems, Steel Bollards, Security Bollards by Barriers and Bollards Limited, manufacturers, suppliers and installers.
http://www.barriersandbollards.com/

Tunneling
Addresses the phenomenon of quantum tunneling. Presents animations of the scattering of a particle from two-dimensional potential barriers and wells, as well as from barriers with slits.
http://rugth30.phys.rug.nl/quantummechanics/tunnel.htm

Flood Barriers
flood panels and flood barriers of lightweight aluminum offer economical flood protection and meet FEMA standards
http://www.floodbarriers.net/

Newgate
Newgate are an experience secured access company who specialise in the design, manufacture and fitting of security gates, traffic barriers, road blockers and sliding gates
http://www.newgate.uk.com/

Metalith
Metalith anti-ram vehicle barriers and blast mitigation barrier walls are designed to protect critical assets with customized force protection. Learn more about our K12 certified perimeter security barriers.
http://www.themetalith.com/

Flood Barriers and Flood Defence Schemes
Flood Control provide a complete range of flood protection products, flood defence designs and flood alleviation schemes.
http://www.floodcontrol.co.uk/

Faddis
Faddis Concrete Products specializes in the manufacture of precast concrete for highway, rail, airport, transit, infrastructure, bridge, bridge deck, noise barrier, retaining wall, junction box, planter, security, safety barrier and design-build structures and projects
http://www.faddis.com/

ERO Industries
Crée en 1960, ERO INDUSTRIE s’impose comme un leader du marché dans la conception et la fabrication de systèmes de contrôle d’accès véhicule et piétons : Barrière automatique, Bornes escamotables, Lecteur et logiciel d’accès et équipement de péage de parking. Grâce à ses centres de développement mécanique et électronique, à son unité de production, à son service d’installation et de maintenance, ERO INDUSTRIE maîtrise complètement la commercialisation de ses produits sur le territoire français et à l’ export. La qualité et la performance des matériels, la certification ISO 9001, et un réseau commercial de proximité ont permis une croissance exemplaire et l’obtention de références prestigieuses.
http://www.ero.fr/