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Browsing by Subject "mining preservation,"

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  • thumbnail.journal.alt
    Item type:Article, Access status: Open Access ,
    Zabezpieczające prace górnicze w obiektach archeologicznych - zabezpieczenie jaskini w Obłazowej
    (Wydawnictwa AGH, 2009) Chmura, Janusz
    The archeological investigations that were conducted in the valley of the Białka river in the Obłazowa cave in 1985-95 resulted in many significant discoveries. Among them were the world oldest boomerang made of the mammoth tusks and many objects with magical significance to the prehistoric man. The discoveries were dated from 30 thousand years BC. After a few-year break in the investigations, preparations to the next stage of archeological investigations started that aimed at reaching the rock bottom of the cave. However, they had to be preceded by preservation operations as the present technical condition of the cave posed a danger to people inside. Preservation operations were carried out aiming at the stability of the walls and the roof. They did not destroy the initial looks of the working but at the same time they ensured full safety to people inside. What is more the safety elements were masked and invisible when the work was completed. The materials applied had suitable certificates that alloved them to be used in difficult conditions, and were neutral to the surrounding environment.