Dutsen Polley

Dutsen Polley ma'adinai ne na  da jan ƙarfe na Kanada wanda ke cikin British Columbia kusa da garuruwan Williams Lake da Likely . Ya ƙunshi shafuka biyu masu budewa tare da bangare na hakar ma'adinai na karkashin kasa kuma mallakar kamfanin Mount Polley Mining Corporation ne ke sarrafa shi, cikakken mallakar Imperial Metals. A cikin , ma'adinin ya samar da fam 38,501,165 (17,463,835  na jan ƙarfe, 45,8 ounces na zinariya, da 123,999 na azurfa. Ginin ya fara aiki a cikin 1997 kuma an rufe shi kuma an sanya shi a kulawa da kulawa a cikin 2019. Kamfanin ya mallaki kadada 20,113 (201.13 ) na dukiya kusa da Tafkin Quesnel da Tafkin Polley inda yake da hayar hakar ma'adinai da ayyukan a kan kadada 2,007 (20.07 km2) da kuma ikirarin ma'adanai a kan kadanta 18,106 (181.06 km2).  Ana isar da ma'adanai ta hanyar mota zuwa Tashar jiragen ruwa ta Vancouver . 

Ya zuwa watan Janairun 2020, Dutsen Polley da aka tabbatar da kuma yiwuwar tan sun kasance tan miliyan 53.8 na ma'adinai mai darajar 0.34% jan ƙarfe, 0.30 grams a kowace tan zinariya da 0.9 grams a kowane tan azurfa, daidai da fam miliyan 400 na jan ƙarfe، 517,000 troy ounces na zinariya da 1.55 troy ounce na azurfa.

Kamfanin Ma'adinai na Mount Polley ya sake buɗe ma'adinin a watan Yulin 2022. Kamfanin Ma'adinai na Mount Polley ya kiyasta cewa sake buɗe ma'adinin ya haifar da ayyukan gida 300.

 Ayyukan hakar ma'adinai 
Lokacin aiki, ma'adinin Dutsen Polley yana motsa tan 80,000-90,000 na kayan aiki a kowace rana daga ma'adinai. Wannan ya ƙunshi tan 20,000 na ma'adinai.

Dutsen Polley ba ya buƙatar ƙwararrun ma'aikata don aiki da ma'aikata da jiragen ƙasa daga al'ummomin yankin na Big Lake, Horsefly da kuma nesa kamar Quesnel da Williams Lake. Yawancin ma'aikata sun fito ne daga al'ummomin da ke kusa da ma'adinai.

 Ma'adanai 
Dutsen Polley ya ƙayyade abin da ya cancanci zama ma'adinai da abin da ya cancanta a matsayin sharar gida ta amfani da hakowa da fashewa. Ana rarraba ma'adinai bisa ga gwajin ƙwallon ƙafa. Ana fitar da ma'adinin sulfide mai daraja zuwa mai niƙa don sarrafawa a tashar da ke wurin. Chalcopyrite da bornite sune manyan ma'adanai masu daraja a Dutsen Polley.

 Gudanarwa 
A lokacin aiki, ma'adinin Dutsen Polley yana sarrafa tan 20,000 na ma'adinai a kowace rana. Ana aika ma'adinin don murkushewa, rage girman, da kuma kwantar da ruwa.

 Zinariya da jan ƙarfe 
A lokacin gwaji, an ƙayyade darajar jan ƙarfe da darajar zinariya a cikin ma'adinai kuma an sanya darajar kuɗi a kowace tan akan kayan. Lokacin da wannan darajar ta wuce wani takamaiman ƙofar, ma'aikata suna fara sarrafa kayan.

Daga baya, ana sarrafa kayan ta hanyar niƙa inda ma'adanai ke iyo. Musamman, ma'adanai na jan ƙarfe da na zinariya dukansu suna iyo sannan kuma suna mai da hankali. Wannan tsari, wanda ake kira haɓakawa, yana haifar da kayan da aka mai da hankali wanda kusan kashi 23% na jan ƙarfe. Ana kuma kama zinariya a cikin concentrated.

 Manazarta 
Rukuni:Shafuka masu fassarorin da ba'a duba ba