Icyerekezo cya MOS: Urupapuro rw'urutare rwa granite rwuzuye rufite udukombe duhambiranye twa kwarutsi, felidisipati na mika. Imbaraga zidasanzwe zo guhangana no gukandwa no kudashaka gukoroshwa bituma ari cyo kintu cya mbere gihitwamo mu gukora ameza yo mu gikoni, inzibutso, ubutaka bw'inzu no gupfuka inyubako. Iboneka yanoze, yorohejwe cyangwa yatwitswe n'umuriro, bitewe n'icyo ukeneye mu bwiza no mu mikorere.