[Computer-controlled ventilation at Waterschei in the Kempen coal mines].

The paper describes the research activities that have been accomplished in recent years in order to realise a computer controlled ventilation-system at Watershei Colliery (Kempense Steenkolenmijnen) in Belgium. Chapter I sums up the original objectives and describes some changes in the philosophy of this project, the objectives already reached, those nearly accomplished and some others that were abandoned. Chapter II contains relatively precise data concerning Waterschei Colliery; this is justified by the fact that local conditions obviously play an important role in the development of any such project. Chapter III and IV give extensive information about those parts of the research-project that have known a major development: i.e. the design, the installation and the remote control of the regulators, especially regulating doors, as well as the development of dialogue procedures between the regulators and the computer.