Quarrying of limestone, chalk and gypsum

Title: Extraction of limestone, chalk and gypsum Includes the extraction and processing operations carried out at the extraction site marly limestone and others, marl, dolomite, calcite, chalk and gypsum, for industry processing and agriculture (soil improver). Does not include:  Extraction of minerals for the chemical industry and fertilizer manufacturing (08910);  Production of calcined dolomite (23521);