Other well-known artists on Ronnex were Jack Hammer ( an American singer from New Orleans who had settled in Belgium and was known as " The Twistin'King " ), Freddy Sunder, The Shakespears, Burt Blanca, Woolley and John Just Born, Davy Jr . & Guess Who ?, Erik Marijsse
42.
Some quarries used primitive top hammer machines that carried the jack hammer on a mast-the slenderness of the drill rods working with a relatively large diameter drill bit caused bore holes to deviate which sometimes meant that a bore hole might finish dangerously close to its neighbour or indeed be closer to the face of the quarry than had been intended.
