Originally an Ingersoll Rand Hobgoblin impact unit was fitted but impacting time became excessive when the sand stone thickened and a Krupp HM 600 hammer had to be substituted. ###>A l'origine, on avait monté un appareil à percussion Ingersoll Rand Hobgoblin, mais le temps de frappe devenait excessif quand le grès s'épaississait et il fallut mettre à la place un briseroches Krupp HM 600.