Newcrest Mining yateye intambwe nshya mu bushakashatsi ku mushinga wa Red Chris muri British Columbia, muri Kanada ndetse n'umushinga wa Havieron muri Ositaraliya y'Uburengerazuba.
Iyi kompanyi yatangaje ko hari ikintu gishya cyavumbuwe mu gace gakorerwamo ubushakashatsi muri East Ridge kari muri metero 300 mu burasirazuba bw'akarere k'iburasirazuba k'umushinga wa Redcris.
Icukura rya diyama ripima metero 198 ku bujyakuzimu bwa metero 800. Ingano ya zahabu ni 0.89 g/toni naho ingano ya umuringa ni 0.83%, harimo ubugari bwa metero 76, ingano ya zahabu ni 1.8 g/toni naho ingano ya umuringa ni 1.5%. Igice cy'amabuye y'agaciro kiri mu mpande zose. Nta na kimwe muri byo cyinjiriyemo.
Gucukura mu gace k'iburasirazuba byagaragaje kandi ubucukuzi bw'amabuye y'agaciro ya zahabu yo mu rwego rwo hejuru, byemeza ko ubucukuzi bw'amabuye y'agaciro bwo mu majyepfo bwagutse. Ku bujyakuzimu bwa metero 528, amabuye y'agaciro ni metero 524, ubunini bwa zahabu ni 0.37 g/toni, umuringa 0.39%, harimo ubunini bwa metero 156, ubunini bwa zahabu ni 0.71 g/toni, umuringa 0.59%, n'ubugari bwa metero 10, ubunini bwa zahabu ni 1.5 g/toni na 0.88% bw'ubucukuzi bw'umuringa.
Kuri ubu, uyu mushinga ufite imashini 6 zo gucukura zirimo kubakwa, ziziyongera zikagera kuri 8 mu gihembwe gitaha.
Umubare wa mbere w'ibikoresho bya RedChris uzarangira muri uku kwezi.
Mu Ntara ya Patterson, muri Ositaraliya y'Iburengerazuba, ubucukuzi bw'amabuye y'agaciro bwa Haweilong Gold Mine yo muri Xinfeng Mining Company bwagaragaje ko amabuye y'agaciro ari meza cyane. Imiterere yihariye y'ubucukuzi ni iyi ikurikira:
◎ Metero 97 mu bujyakuzimu bwa metero 500, zahabu ifite 3.9 g/toni, umuringa ufite 0.5%, harimo ubugari bwa metero 15, zahabu ifite 9.7 g/toni n'umuringa ufite 1.8% by'amabuye y'agaciro;
◎ Metero 169.5 z'amabuye y'agaciro zagaragaye ku bujyakuzimu bwa metero 711.5, zahabu yari 3.4 g/toni, umuringa 0.33%, harimo ubugari bwa metero 58.9, zahabu yari 6.2 g/toni n'umuringa 0.23% by'amabuye y'agaciro;
◎Ku bujyakuzimu bwa metero 537, hagaragaye metero 79.3 z'amabuye y'agaciro, afite ubunini bwa zahabu bwa 4.5 g/toni n'umuringa wa 1.4%; harimo ubugari bwa metero 41.7, ubunini bwa zahabu bwa 8.4 g/toni n'umuringa wa 2.6% by'amabuye y'agaciro;
◎ Metero 109.4 z'amabuye y'agaciro zagaragaye ku bujyakuzimu bwa metero 622, zahabu yari 5.9 g/toni, umuringa 0.63%, harimo ubugari bwa metero 24, zahabu yari 17 g/toni n'umuringa 1.4% by'amabuye y'agaciro.
Ubutare bw'amabuye y'agaciro ntiburagera mu bwihisho. Kuri ubu, umushinga uteganya ko umutungo wa zahabu ungana na garama miliyoni 3.4 naho umuringa ukaba toni 160.000.