Deep Navigation Colliery Deep Navigation Colliery Deep Navigation Colliery was a coal mine in South Wales, that operated from 1872 until 1991. Located next to the co-developed village of Treharris in the borough of Merthyr Tydfil, on development it was the deepest coalmine in South Wales Coalfield by some . Producing the highest quality steam coal, it powered both the Cunard passenger steamers RMS "Mauretania" and RMS "Lusitania" in their successful attempts at the Blue Riband prize for the most rapid Atlantic Ocean passage. The mine is also thought to have been one of several locally that provided coal to the RMS Titanic;
Deepest Blue Deepest Blue Deepest Blue were a British electronic music duo comprising Matt Schwartz and Joel Edwards. They are best known for their UK Top 10 hit singles, "Deepest Blue" (2003) and "Give It Away" (2004). Deepest Blue consisted of Joel Edwards and Matt Schwartz. Schwartz had worked with Arthur Baker, Mica Paris, JTQ and Massive Attack prior to Deepest Blue. He collaborated with Massive Attack on their album "Mezzanine", helping to co-write "Dissolved Girl" which was used in the 1999 film "The Matrix". After being signed to Warner Chappell, fellow producer and singer-songwriter Edwards went on to work with Ed