Ntchito luso lathu mu chakudya ndi chakudya makampani. nthawi zambiri, mukaganiza za electrostatic ndondomeko beneficiation, zipangizo zimene zimabwera m'maganizo monga mankhwala mafakitale monga

Mochuluka kwa ntchentche wanu phulusa zinyalala mtsinje. Kuchokera pa kafukufuku wa pachaka ochitidwa ndi American Malasha Ash Association (ACAA) pakati 1966 ndi 2011, kuposa 2.3 biliyoni lalifupi