1) Industrial process
Found on
https://www.crosswordclues.com/clue/hoffmann-kiln
The Hoffmann kiln is a series of batch process kilns. Hoffmann kilns are the most common kiln used in production of bricks and some other ceramic products. Patented by German Friedrich Hoffmann for brickmaking in 1858, it was later used for lime-burning, and was known as the Hoffmann continuous kiln. ==Construction and operation== A Hoffmann kiln ...
Found on
http://en.wikipedia.org/wiki/Hoffmann_kiln
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