LITEBUILT
LITEBUILT® Aerated Concrete, Lightweight Concrete, Cellular Concrete and Foamed Concrete for lightweight panels, blocks, floor screed, roofing, etc. including full technical details and lightweight cellular concrete site photos.
http://www.litebuilt.com

Transtech Systems, Inc.
Manufacture a range of products for the road construction industry. Products include a joint maker, precompaction screed, and edge follower. Includes an overview of products and technology, and job opportunities.
http://www.transtechsys.com/index.htm

Public Works, Online Edition
Public Works serves industry professionals, consulting engineers, and contractors who design, construct, operate, maintain, and rehabilitate public works and infrastructure projects and programs in cities, counties, states, utilities, and special districts.
http://www.pwmag.com/

How a Compass Works
A compass is a simple device that is highly useful for navigation. Find out why a compass always points north and learn how to build your own compass.
http://www.howstuffworks.com/compass.htm

How Google Toolbar Works
HttpRevealer helps debug your HTTP headers, ASP pages, JSP pages, Java Servlets, ColdFusion applications, Perl programs, CGI scripts, Flash applications. It acts like an HTTP sniffer, or an HTTP proxy server with all the HTTP communications exposed to you.
http://www.httprevealer.com/usage_google.htm

How Stuff Works: How a Liquid Crystal Display (LCD) Works
Learn about LCD technology, get LCD buying tips, read LCD reviews and compare prices and features on popular LCD models.
http://www.howstuffworks.com/lcd.htm

How an Electromagnet Works
Electromagnets are found in motors, tape decks, hard drives, VCRs and tons of other devices. Find out what makes an electromagnet "electro" and learn how to make one at home.
http://www.howstuffworks.com/electromagnet.htm

How Stuff Works: Internet Firewalls
Firewalls have helped protect computers in large companies for years. Now, they're a critical component of home networks, as well. See how firewalls work.
http://www.howstuffworks.com/firewall.htm

Mentoract Reader
A freeware cross-platform application that works with standards-compliant works, such as .oeb and .html formatted texts.
http://www.globalmentor.com/

How Stuff Works: Personal Digital Assistants
PDAs give you big-time computing power on the go. Learn about PDA technology, get PDA buying tips, read PDA reviews and compare prices on popular PDA models.
http://www.howstuffworks.com/pda.htm