Subject: Northern Carbon Research Laboratories. Frangula Alnus. Note on examination of sample by scanning electron microscope, made by Eileen McAuliffe from the University of Newcastle on Tyne.
Description: SEM Micrograph of a fracture surface of Frangula Alnus charcoal from the Waltham Abbey excavation. The surface, showing a transverse view was ultrasonically cleaned then carbon and gold coated
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