FIELD: manufacturing adhesives, rubber and friction materials. SUBSTANCE: carbonate-containing filler is prepared of lake silt-sapropel which comprises CaCO3, its content in ash (as calculated for CaO) is 0.1-53.0 mass %. Silt is preliminary prepared and then affected by final drying till its moisture content is 0.1-60.0 mass %. Drying is carried out at natural condition or at 46-520 C. EFFECT: improved strength characteristics of adhesives, rubber and friction materials. 5 tbl
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