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Thomas Edison’ Menlo Park
Carbon Shed

Carbon Shed - Menlo Park The Carbon Shed contained a rows of ordinary Kerosene lamps that remained constantly burning. The carbon soot that collected on the glass chimneys was scraped off and saved nightly by the nightwatchman.

Most of it was pressed into small tablets and then sliced into thin wafers to form the carbon transmitting buttons for Edison’s telephone.

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