Eugen Scrob, an I.S.P.H. researcher, came up with an idea which was to keep the mine from completely collapsing. He immediately applied a new experimental method, helped by the miners of the Slanic mine. After four years of work, the stream bed was eventually regulated. Constant drillings monitored the dynamics of landslide and the piezometric level. Also, huge amounts of concrete were used to line the shaft and fill the existing cavities. All costs of these works, amounting to a total of over 20 billion Romanian lei (ROL; equivalent to 2 million RON), were exclusively borne by the Slănic salt mine.