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;
O the Deep, Deep Love of Jesus consists of three stanzas each utilizing an A, A, B, B rhyming structure. Various melodic and harmonic arrangements of the song have been published, the most common being a minor melody in 3/4 time. O the deep, deep love of Jesus, vast, unmeasured, boundless, free! Rolling as a mighty ocean in its fullness over me! Underneath me, all around me, is the current of Thy love Leading onward, leading homeward to Thy glorious rest above! O the deep, deep love of Jesus, spread His praise from shore to shore! How He loveth, ever loveth, changeth never, nevermore! How He watches