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2. Power screed - Wikipedia

   en.wikipedia.org/wiki/Power_screed

   A power concrete screed is a tool used to smooth and level freshly poured concrete surfaces. It can be used in place of a man-powered screed bar to strike off excess concrete. A power screed works by consolidating and/or vibrating the wet concrete mixture.

3. Bush hammer - Wikipedia

   en.wikipedia.org/wiki/Bush_hammer

   In 1831, Joseph Richards (1784–1848) invented the bush hammer. The US patent was issued February 20, 1828, for a stone-working tool, with a patent number of 5010X.

4. Concrete mixer - Wikipedia

   en.wikipedia.org/wiki/Concrete_mixer

   A concrete mixer (also cement mixer) is a device that homogeneously combines cement, aggregate (e.g. sand or gravel), and water to form concrete. A typical concrete mixer uses a revolving drum to mix the components.

5. CDI Corporation - Wikipedia

   en.wikipedia.org/wiki/CDI_Corporation

   CDI Corporation is a privately held US company providing engineering, procurement, construction management and staffing services to clients in a range of industries including energy, chemical, semiconductor and battery manufacturing.

6. Cementing equipment - Wikipedia

   en.wikipedia.org/wiki/Cementing_equipment

   A float collar is installed near the bottom of the casing string. Cement plugs land on it during the primary cementing operation, thus retaining inside the casing a small portion of the cement slurry that may have become contaminated as the top plug scrapes the inside of the casing. It is similar to a float shoe; often both are used for redundancy.

7. AOL Mail

   mail.aol.com

   What if I have questions or need help with AOL Mail? You can find instant answers on our AOL Mail help page . Should you need additional assistance we have experts available around the clock at 800-730-2563.