Unburned cib yog ib hom tshiab ntawm cov khoom siv phab ntsa ua los ntawm ya tshauv, coal slag, thee gangue, tail slag, tshuaj slag los yog ntuj xuab zeb, hiav txwv av (ib los yog ntau tshaj ntawm cov khoom siv raw saum toj no) raws li cov ntaub ntawv tseem ceeb uas tsis muaj qhov kub thiab txias.

Nrog rau kev nce qib ntawm kev loj hlob hauv nroog, ntau thiab ntau qhov kev tsim kho pov tseg tau raug coj mus rau cov chaw tswj xyuas nroog hauv xyoo tas los no, uas tau ua teeb meem rau cov chaw tswj xyuas nroog. Tsoomfwv tau maj mam paub txog qhov tseem ceeb ntawm kev kho cov khoom siv pov tseg ntawm kev tsim kho. Los ntawm lwm qhov kev xav, kev tsim khoom pov tseg kuj yog ib hom kev nplua nuj. Tom qab Honchacib ntau lawm kab, nws tuaj yeem dhau los ua qhov tsis txaus ntawm cov khoom siv phab ntsa tshiab, uas tau siv tag nrho.

Fly tshauv yog qhov chaw muaj kuab lom tshaj plaws. Nyob rau hauv peb lub teb chaws, cov zis muaj txog li 1000 tons, feem ntau tsis tau siv. Nws tsis yog tsuas yog pov tseg ntawm cov peev txheej xwb, tab sis kuj ua rau muaj kev ua qias tuaj ib puag ncig hnyav zuj zus. Qhov tseeb, ya tshauv kuj yog ib qho khoom siv zoo rau kev cib. Tom qab Honcha cib ntau lawm kab, nws tseem tuaj yeem dhau los ua qhov tsis txaus ntawm cov khoom siv phab ntsa tshiab, uas tau siv tag nrho.

Tsis tsuas yog siv pov tseg, ya tshauv, tailings, hlau smelting thiab lwm yam khoom pov tseg, tab sis kuj Honcha siv khib nyiab hlawv dawb cib tshuab tuaj yeem hloov pov tseg rau hauv cov khoom muaj nqis. Lub cib tsim los ntawm Honcha kuj tseem siv tau rau kev txuag dej, phab ntsa, hauv av thiab vaj!

Kev sau cov khoom pov tseg, cov cuab yeej siv pov tseg, kev tsim kho cov khoom siv pov tseg, cov tib neeg cuam tshuam li cas nrog kev tsim cov khib nyiab, kev tsim cov khib nyiab feem ntau siv li cas, qhov twg cov khib nyiab pov tseg ntawm tus kheej raug nchuav, cov khoom siv pov tseg, cov khoom siv pov tseg pov tseg rau qhov twg, thiab kev faib cov khoom pov tseg yog dab tsi.