2026-09-27T16:34:56+01:00https://marinefinds.org.uk/datalabs/terminology/object/format/jsonhttps://marinefinds.org.uk/datalabs/terminology/object/format/xmlhttps://marinefinds.org.uk/datalabs/terminology/object961193969KNOCKING SLATEYA slate situated at the end of a terrace for a coal company employee to wake the miners for their shift. The slate had the time of the shifts written on it.1P