T. W. J. Connolly, History of the Royal Sappers and Miners…
“ How many rifle balls, how many shots fly past, few can tell; but on he urges as if nothing had occurred, and perhaps the next discharge kills him. Steal now along the trench to its advanced limit, and there is seen a group of busy miners black with gunpowder in shallow depths, blasting the rock to deepen the approach and strengthen the cover. How well they know their art. Not a head is seen above the young parapet and scarcely that of a hammer; but when a strong blow is required, up it goes and the sun sparkling on the burnished steel gives a mark to the enemy. ”
