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;
How Deep Is the Ocean? introduced on the radio rather than on stage or film. The song is a series of questions posed one after another, the only exception being the second line, "I'll tell you no lie." This song, together with "Say It Isn't So", were huge hits in 1932 and brought Berlin back to the top again. Popular versions of "How Deep Is the Ocean?" in 1932 were by Guy Lombardo (vocal by Carmen Lombardo), Paul Whiteman and His Orchestra (with vocals by Jack Fulton), Rudy Vallée and Ethel Merman. Bing Crosby was another who recorded the song for Brunswick on October 14,