563. In the area of surveillance exercised by the authorities, Article 122 of Heading IX of the mining law states that: “Sworn engineers and officials of the Directorate of Mines are responsible for the administrative and technical supervision of research and mining works regarding mineral substances and those of their dependants. They contribute to the control of the implementation of the legislation and regulation of the work of the companies referred to in this Order. To this end, they shall have powers devolved on labour inspectors and jointly with them by the Labour Code”. 564. Mining offences are investigated by judicial police officers, sworn officers of the directorate of mines and all other commissioned agents in line with the provisions of the Criminal Procedure Code. The report presented under this Article is authentic until proven otherwise. 114