The manufacturers listed in this sourcebook are the key players in the concrete production industry. Each year, they invest hundreds of millions of dollars in research to help improve our industry and the techniques to help you with your jobs. It's important to support those manufacturers who have our industry in their hearts. Such support will help fund their efforts to become sustainable.

I urge you to use this guide as a first reference when considering a purchasing decision.

Note: When we invited manufacturers to participate in our guide, we didn't ask an important question: Is your product green?

So I'm planning to make up for this oversight by publishing a special section highlighting green and sustainable products in our September issue. Please nominate your favorite green product by e-mailing me the appropriate information.

Editor In Chief