Eric Lestock Kay

water road training rock stream pipe culvert class forest engineering train abutment stone river cement ford course flow clarity sediment silt mining industrial compact calculator concrete revetment flexible crossing truck backfill safety inspection gabion cost boulder creek headwall low bridge armoured velocity sheet work access restricted waterway shot rip-rap block seminar workshop comment schooling improvement self compaction excavation layout time schedule agenda staff operator equipment turbitity habitat solution issues quality aquatic management fish life mine field trip turbidity sand pond clay settling investigation empankment scarp head contour drainage excavator spider estimate wetting grade spread armour tire fork wheel pallet mast boom mobile instruct teach forklift fill coupling fastener rivet notify report frequency protect scheduling list check review assessment engineer stabilise mse mechanical steel durable green environment storm high torrent flood surface armor