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;
Geography of Milwaukee Bridge, then ends near the Bay View neighborhood and becomes the Lake Parkway. Geography of Milwaukee Milwaukee lies along the shores and bluffs of Lake Michigan at the confluence of three rivers: the Menomonee, the Kinnickinnic and the Milwaukee. Smaller rivers, such as the Root River and Lincoln Creek also run throughout the city. Because Lake Michigan is too large to see across, Milwaukee's waterfront resembles an ocean rather than an inland lake. Milwaukee's terrain is relatively flat, except for steep bluffs along the lakeshore that begin about one half mile north and four miles (6 km) south of the