| Description | Thin sections: glass slides containing mounted samples (e.g. sediments, rocks, minerals, slags, concrete, mudbrick, and plaster, fired clays).
This only applies to material excavated or discovered as part of a planned or amateur excavation or survey within the borough of Harrow regardless of boundary changes over time.
For more guidance see the Society of Museum Archaeology's fact sheet for thin sections: http://socmusarch.org.uk/training/smart-project/
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