Frank Lloyd Wright  

CMU
Concrete Masonry Unit (CMU) is the generic technical name for concrete blocks.
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Cinder blocks differ from concrete blocks in their aggregate content. Cinder blocks are made from coal cinders and portland cement. Cinder blocks are lighter and, depending on aggregate availability, may be cheaper than concrete blocks of the same size.
[Wikipedia, "Concrete masonry unit"]
Scroll down to 12Blocks:
http://archidose.blogspot.com/

cmu now i know
thanks...
cmu now i know
thanks sdr any idea who does this type of manufacturing ? I could take about 500 pieces for all the work that i need,

This will get you started
I hope. http://www.erwinhauer.com/http://www.architonic.com

.erwinhauer
thanks i will contact is offices on Monday I was a small apartment that he did the work for in NYC and it was great

Click
on the 12Blocks link in that article, LRF -- it's a group called Loom Studio. They seem to be manufacturing them, though I don't know where.