Disagreement arose over whether or not the product issues resulted from sub-standard ingredients having been delivered to the "Moulin-Blanc" plant (till 1907 under the control of Léopold Maissin) by the "Pont-de-Buis" factory (at the time when the unstable explosives were produced under the direction, of Albert Louppe), or from failure to implement proper inspections of raw materials delivered to the "Pont-de-Buis" manufacturing plant.