Mahakar ma'adanin kwal mafi girma a kasar Sin - Ha'erwusu Open Pit Minne. Ma'adinin kwal yana cikin birnin Mongoliya na gida mai cin gashin kansa, Zhungeer Qi Ordos (Xuejiawan) Gabas a wannan yanki, an gina Arewa a cikin ma'adinan budadden ramin Coal Heidaigou. Ana amfani da rollers masu hakar ma'adinai da yawa a cikin ma'adinan.Matsakaicin kwal da za a iya dawo da shi shine ton 17.3, matsakaicin kauri mai kauri shine mita 21.01, duka matsakaicin rabewa shine 6.626 cubic meters per ton.Rayuwar sabis ɗin ƙira shine shekaru 79.Ma'adinin kwal na farko ya tanadi tan 6.36, tare da matsakaicin rabewar mita 4.099 a kowace ton, da kuma tsawon shekaru 32.

Ma'adinan kwal don ash, low sulfur, low phosphorus, high volatile, high calorific value, high ash melt point of dogon harshen wuta, da aka sani da "kore kwal", kwal tare da high quality iko, yana da m kasuwa prospect.The surface. Fasahar hakar ma'adinai na ma'adinan kwal da bin diddigin tare da shebur mai tono guga guda ɗaya da babbar mota da aikin cire layin.A kowace rana babbar tawagar duniya da ta kunshi manyan motocin dakon kaya masu nauyi da suka taru a nan, ana kiran wannan dodo mai suna "iron and Steel Group Mining toil" da ya yi gudun hijira a muhallin da ake hakar ma'adinai na Wujin, yana haifar da kima sosai.

Ma'adinin kwal na budaddiyar iskar yana cikin yankin Ordos Plateau, wanda yana daya daga cikin yankunan da ke fama da matsalar zaizayar ruwa da kasa a kasar Sin.Asalin gulmar saman yana tsaye kuma a kwance, ciyayi ba su da yawa, zaizayar iska da kwararowar hamada suna da matukar muni, kuma yanayin yanayi yana da muni sosai.Daga ainihin ginin, buɗaɗɗen buɗaɗɗen ma'adinin kwal ɗin za a daidaita shi tare da haɓakawa da haɓakar kore. Kyakkyawan haɓakar ci gaban ma'adinan ma'adinan yana da kyau a kasuwan ma'adinan ma'adinai.

Ma'adinin kwal mafi girma a duniya - Rochester coal mine.Ma'adinin kwal yana cikin Kogin Foda na Wyoming, shine mafi girman ma'adinin kwal a duniya tare da fiye da tan 23.Har ila yau, ma'adinan na ɗaya daga cikin manyan filayen kwal a duniya, na kamfanin makamashi na Peabody. A kowace shekara ma'adinan na sayan na'urorin hakar ma'adinai da yawa.Gadon kwal na ma'adinin kwal na Rochester yana da nisan mita 18.3 na saman saman mai tsayin mita 76.2 kuma ya kai kilomita 80.47.Ma'adinan na da fadin kasa murabba'in kilomita 258.9, daidai da girman Washington, D. C.. Tarin Carbon da ya kai tan 30.Yana ɗaukar shekaru 25 zuwa 30 don kammala aikin hakar ma'adinai.Rochester coal samar da kwal an san shi da mafi tsaftataccen gawayi, matsakaicin zafin gawayi a kowace laban na raka'o'in thermal na Biritaniya 8800, da abun ciki na sulfur kasa da 0.2%.

Kwal ɗin da aka yi amfani da shi ya yi amfani da ɗigon ruwa da guga ɗaya da fasahar manyan motoci, sun dogara da manya-manyan kayan aikin injiniyoyi, suna haɓaka ingancin aikin sosai.Kowace rana, kimanin tafiye-tafiye 21 na jirage masu lodin gawayi za su tashi daga ma'adinin kwal na Wyoming's Rochester zuwa tashoshin wutar lantarki 100 a fadin kasar.Ko da motocin kwal da aka ajiye a tashar hakar ma'adinan Rochester suna iya yin lodi fiye da ton 440. An san birnin a matsayin "cibiyar hoton duniya", "birnin furanni", kowane bazara, furanni furanni, don haka "flower" birni” a duniya.