Tác giả: Hack, H.R.G.K.; Người hướng dẫn: -; Người tham gia: - (2015)
This lecture presents: Limits of one’s property; Boundary; Two types of boundaries; Land management functions; Fit-for-which-purpose; Boundary issues not number 1.
Tác giả: Hack, H.R.G.K.; Người hướng dẫn: -; Người tham gia: - (2015)
This lecture presents: Wear during quarrying; Quarrying as old as humankind; Excavation methods; Excavation methods in quarries; Excavation & drilling mechanisms; Fire setting; Hydraulic/pneumatic hammer/breaker; Wear of excavators.
