Slovakia, although historically an agrarian country, is also rich in technical monuments. The country occupied an eminent position in the area of extraction and processing of ores. Technical monuments that survive here are the witnesses of not only the mining but also industrial production in general. They are perhaps belong to the most threatened type of monuments that are decaying literally in front of our eyes. It also is the reason why this book was published. Its mission is to promote and support first the documentation of important and valuable monuments and eventually their conservation. The book is also intended to raise the awareness of the public about the value of the technical heritage and its protection and conservation. English text.