Iyo Inoputika-Chiratidzo cheMagetsi Equipment Inorongwa sei

Kirasi I midziyo yemagetsi haina kuomerera kune yakatarwa grading system.

YeKirasi II midziyo yemagetsi, kupatsanurwa kunotarwa nerudzi rwegasi rinopfuta rasangana naro. Midziyo iyi yakakamurwazve kuita mhando nhatu dzekuputika-dziviriro: IIA, IIB, uye IIC.

Munzvimbo dzinoshandisa midziyo yemagetsi yeClass I, uko magasi anobvira kunze methane varipo, kutevedzera ese ari maviri Kirasi I uye Kirasi II kuputika-chiratidzo zviyero zvinosungirwa.

Kubva pane chaiwo maitiro e zvinoputika guruva nharaunda, Kirasi III michina yemagetsi yakakamurwa kuita mapoka matatu: IIIA, IIIB, uye IIIC.