深く掘削しなければならないなど、土が崩れる可能性がある場合は、 山留め(土留め)を設けなければなりません。 Irrespective of whether you need a wheeled device or even a mini, midi, big crawler or specialty, CASE excavators boast large ability, smart hydraulics and unmatched dependability. For the reason that when paydirt is at the bottom, you are able to’t afford to pay for to stop digging. https://case-study-solution01938.blogars.com/35333503/considerations-to-know-about-hbs-case-study-analysis