Vanhu vanotevera kuchera matsime emvura yakakwira pasina mubvunzo vanosarudza madhiri ekuchera matsime emvura yepneumatic. Pakudiwa kuri pasi pekudzika kwemamita mazana mana, isu tichadhiza iyo yakakodzera air compressor zvinoenderana neinodiwa aperture; kana kuda kwako kuri pamusoro pe400 metres, isu tichatsanangura pombi yematope"'/mhepo compressor yakasanganiswa kushandisa chirongwa uye akawanda emhepo compressor yekubatanidza zvirongwa. Mune inofambiswa modhi yedhiri yekuchera, isu tine mhando ina: mota-yakaiswa "'/ inokambaira "'/ matayi "'/ trailer kuti uone zvaunoda.