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In 1911 there was a company that demonstrated a machine that mixed and pumped concrete mortar to form a stucco wall. Perhaps this was some early technology that was almost the same as required today to create 3-D concrete structures.

The description appeared in Insurance Engineering, Volume 21, Number 1, January 1911, pages 78-79 and is reproduced here.

Read the complete story in the January 2021 Issue of the Archives.

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