Loo isticmaalo in laga saaro dhagxaanta iyo walxaha shisheeye. Qaababka kala duwan ee xoogga loogu talagalay in si sugan loo qabsado loona xakameeyo sii daynta walxaha shisheeye. Dahaarka xooggu wuxuu kaa caawinayaa yaraynta khatarta ah in la qabsado. Shaft birta aan lahayn waxaa loogu talagalay in lagu bixiyo xoog si ay uga caawiso iska caabin laabashada ama foorarsiga inta lagu jiro horumarka.
