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Edison standing next to model of concrete house.

Edison with model of pre-fabricated concrete house, about 1910

As a by-product, the ore-crushing apparatus produced large quantities of high-quality sand. As a consequence, Edison started a successful cement business. He then proposed to construct pre-fabricated low-cost concrete houses. Only a few such houses were actually constructed.

SI negative #87-1658

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The Challenge of Success
Before Forty
Changes At Forty
Home Life
The New Technical World
Fame And Its Distractions
Edison In His Eighties