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
Juminda lighthouse Juminda lighthouse Juminda lighthouse (Estonian: "Juminda tuletorn") is a lighthouse located in the Juminda Peninsula, Kuusalu Parish, in the region of Harju; in Estonia. The lighthouse was built in 1937, it is a circular concrete tower with a lantern and double gallery. The upper portion of the lighthouse is painted red, the lower is painted white. Prior to 2006, the lighthouse had a height of 24 metres, the red portion if the lighthouse was added in the year of 2006. The lighthouse is located in the Lahemaa National Park. The lighthouse had a glare configuration of: 3 s on, 2