Mbere yo kuruhukaikoreshwa mu kumenagura inka, ingurube, amafarashi n'andi matungo manini, ikwiriye kandi imyanda yo mu ibagiro, Pre-breaker mu ruganda rwose rwo gukora ibishushanyo ni yo ya mbere itangiye gukora, bityo hari imbaraga nyinshi mu kazi, ibikoresho byose biraramba cyane, imikorere yoroshye, moteri n'ibikoresho birahindurwa, iyi miterere ikwiriye kubungabunga vuba no gusimbuza ibice byangiritse.
Igihe cyo kohereza: 31 Nyakanga-2023
