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A view of the relief on the top of the Tomb of Eurysaces the baker that illustrates the process of producing bread. For wonderful details, click on image and/or download at "Max Size Available" (upper right).
From right to left: sifting grain; purchasing grain; two industrial grade grinder turned by donkeys(!); displaying the loaves; and selling the loaves.
Eurysaces was a freed slave who started a bakery and became very rich!