1.ExTensive isingabvumirwe kugona kwekushanda zvisina kufanira.
2.Kunorwazve chimiro, kushoma kuputsa frequency, isingadhuri yekukora mari, nyore uye yakatsiga kushanda.
3.Broad inoshamisa, yakakodzera deciccating poow, bvisa, mitsetse, uye yakasimba mashandiro ekushandisa, anogonesa shanduko dzakakura mukubuda pasina kukanganisa simba.
4.Efiritsiless yekugeza.
1. Indasitiri yemakemikari: Sulfanic acid, caustic soda, nitric acid, potassium dichromer, calcium magniger phosphato fetiraiza,
2..
3. Mining Zvigadzirwa: Bentonite, kuisa pfungwa, marasha, manganese ore, pyrite, limestone, peat
4