John Smeaton He pioneered the use of 'hydraulic lime' (a form of mortar that will set under water) and developed a technique involving dovetailed blocks of granite in the building of the lighthouse. His lighthouse remained in use until 1877 when the rock underlying the structure's foundations had begun to erode; it was dismantled and partially rebuilt at Plymouth Hoe where it is known as Smeaton's Tower. Deciding that he wanted to focus on the lucrative field of civil engineering, he commenced an extensive series of commissions, including: Smeaton is considered to be the first expert witness to appear in an English
Amlwch Lighthouse B., "Lighthouses of Wales: Their Architecture and Archaeology" (Royal Commission on the Ancient and Historical Monuments of Wales, edited by Hughes, S., 1994) <br> Amlwch Lighthouse The Amlwch Lighthouse (Grid reference: SH 452937) is a lighthouse tower situated on the outer pier of Amlwch, at the northeast tip of Anglesey, Wales. The existing lighthouse, a square tower erected in 1853, is the fourth on this site. It has original fine, but battered, ashlar masonry to a height of ; the present lantern was added on top at a later date. Two short piers at Amlwch were built following a private