Pen and wash sketch labelled 'Gavelock', an iron crowbar or lever. One of a set of 66 watercolours and pen and ink sketches of aspects of lead mining in the area by various artists, asembled from two related stitched volumes of contemporary work. These volumes show scenes of all aspects of lead mining above and below ground, the procesing of ore, its transport by horse, the tools and the life of the lead miners. They are set posibly in Alston Moor, Northumberland, or Allendale - certainly in the north-east Pennines - with a manuscript disertation 'On the Washing of Lead Ore' and a related figured diagram of a proposed vesel.
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