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
Mark Smeaton around his eyes. Anne is not thought to have noticed his disappearance nor had she been informed of his arrest. At 6 pm on 1 May, Smeaton was sent to the Tower of London. Before his arrest, Smeaton was known to spend lavishly on horses and liveries. This was seen as suspicious, as Smeaton earned only £100 a year; the implication being that he had received money from the Queen in exchange for "services" as her lover. While at the Tower, Smeaton was placed upon the rack. It was during this form of torture that Smeaton confessed to being the