Szukana fraza: [Abstract = "Examined were the properties of unburned waste rock on the mine spoil of the coal mine Piast in Nowa Ruda. Waste material was relatively ho\-mogeneous in various parts of the spoil. It contained high amounts of skeleton and residual coal, and its pH was neutral or alkaline. The salinity was in the class 0, and Pb, Zn, and Cu concentrations were low. Those properties should not negatively affect the process of reclamation."]

Wyników: 1