Kuva hagati muri Nyakanga, rushyigikiwe nuruhererekane rwibintu byiza nko gukwirakwiza ingufu mu karere no gufata neza ibikoresho, isoko rya kariside ya calcium yo mu gihugu ryazamutse. Kwinjira muri Nzeri, ikibazo cyo gupakurura amakamyo ya kariside ya kariside mu turere tw’abaguzi mu majyaruguru y’Ubushinwa no mu Bushinwa bwo hagati. Ibiciro byubuguzi byakomeje kugabanukaho gato kandi ibiciro byagabanutse.Mu cyiciro cyanyuma cyisoko, kubera ko muri iki gihe itangizwa rusange ry’inganda za PVC zo mu gihugu ku rwego rwo hejuru ugereranije, kandi hariho gahunda nkeya zo kubungabunga nyuma, isoko rihamye .
