Njerwa zosawotchedwa ndi mtundu watsopano wa zinthu zapakhoma zopangidwa ndi phulusa la ntchentche, slag malasha, malasha gangue, slag ya mchira, slag yamankhwala kapena mchenga wachilengedwe, matope a m'nyanja (chimodzi kapena zingapo mwazinthu zomwe zili pamwambazi) monga zida zazikulu zopangira popanda kutentha kwambiri.

Ndi kupita patsogolo kosalekeza kwa kukula kwa mizinda, zinyalala zomangira nyumba zakhala zikubweretsedwa m’madipatimenti oyang’anira mizinda m’zaka zaposachedwapa, zimene zadzetsa mavuto m’madipatimenti oyendetsa mizinda. Boma lazindikira pang'onopang'ono kufunika kosamalira zinyalala zomangira pogwiritsa ntchito zida. Kuchokera kumalingaliro ena, zinyalala zomanga ndi mtundu wachuma. Pambuyo pa Honchamzere wopanga njerwa, ikhoza kukhala kusowa kwamakono kwa zipangizo zatsopano zapakhoma, zomwe zakhala zikugwiritsidwa ntchito mokwanira.

Fly ash ndi malo oipitsa kwambiri. M'dziko lathu, zotulutsa zimafika matani 1000, ambiri omwe sanagwiritsidwe ntchito. Sikungowononga chuma, komanso kuwononga kwambiri chilengedwe. Ndipotu, fly ash ndi chinthu chabwino chopangira njerwa. Pambuyo pa mzere wopangira njerwa wa Honcha, ukhoza kukhalanso kuchepa kwamakono kwa zipangizo zatsopano zapakhoma, zomwe zakhala zikugwiritsidwa ntchito mokwanira.

Osati zinyalala zomangira, phulusa la ntchentche, tailings, kusungunula zitsulo ndi zinyalala zina zolimba, komanso zinyalala zomanga za Honcha zoyaka makina a njerwa aulere amatha kusandutsa zinyalala kukhala chuma. Njerwa yopangidwa ndi Honcha imagwiranso ntchito pakusungira madzi, khoma, nthaka ndi dimba!

Kutolera zinyalala zomangira, zinyalala zomangira, zobwezeretsanso zinyalala zomanga, momwe anthu amachitira ndi zinyalala zomanga, momwe zinyalala zomangira zimasamaliridwa, pomwe zinyalala zomangira zimathiridwa, zomwe zikuphatikizidwa mu zinyalala zomanga, komwe kumatayidwa zinyalala, ndi gulu lanji lomwe zinyalala zomanga zimakhala.