In English (with definitions), French, German and Italian. Mining, which includes boring, drilling, extraction, ventilation, services, pipelines, hauling and so on, is a vast and complex subject. The search and exploitation of minerals is unceasing in many regions of the world, creating a need for an extensive dictionary of mining technology. The principal scope of the present multilingual dictionary is not only to enhance the knowledge of the subject but also to intensify and multiply those human contacts without which progress would be hindered.