A process is described for the continuous production of alcoholic or hydro-alcoholic solutions of hydrogen peroxide in a concentration ranging from 2 to 10% by weight and their direct use in oxidation processes. The method includes the steps of forming an etch stop film and an intermetal insulating film sequentially on a lower metal film to be interconnected, forming a via hole for exposing a portion of a surface of the etch stop film through the intermetal insulating film, and forming a trench having a width wider than that of the via hole on the intermetal insulating film. Therefore, a financial institution can adequately handle a false claim regarding a valid bundle of banknotes. An adjustable trigger mechanism is positioned on the ground above a mole burrow. Each drive signal may control power switches during its driving intervals, the power switches being coupled to electromagnets of the BLM.