LGRB-BW KMR50: Important Outreach and Profiles

Raw material exploration drilling, extraction or exploration drilling (with LGRB archive number) as well as other mineral geological or deposit-related important dilution points.原料勘探钻探、采掘钻探或勘探钻探（均附带LGRB档案编号），以及其他与矿产地质或矿床相关的重要贫化点。