West Midlands
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Brook, D. (1987): Abandoned limestone mines in the West Midlands of England - Underground dereliction in an urban area. Présenté pendant: AFTES - Journées techniques, Bordeaux, 1987, pp. 121-128.
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Cragg, Roger (1997): Civil Engineering Heritage. Wales and West Central England. 2ème édition, Londres (Royaume-Uni), ISBN 9780727746115, pp. 309.
https://doi.org/10.1680/cehwawce.25769
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Des ancrages auto-forants DSI à barres creuses stabilisent un talus de la première route à péage d'Angleterre. Autoroute «Birmingham Northern Relief Road», West Midlands,
Birmingham, Angleterre. Dans: DSI Info, n. 12 ( 2003- 2004), pp. 29.
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DSI Hollow Bars used to stabilize a steep cutting on the UK's first toll road. Birmingham Northern Relief Road, West Midlands, Birmingham, England. Dans: DSI Info, n. 12 ( 2003- 2004), pp. 35.
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DSI-Hohlstab-Bodennägel sichern Steilböschung an der ersten Mautstraße Großbritanniens. Autobahn »Birmingham Northern Relief Road«, West Midlands, Birmingham, England. Dans: DSI Info, n. 12 ( 2003- 2004), pp. 29.