Cover Image
close this bookDisaster Rescue - Australian Emergency Manual (Natural Disaster Organization, 183 p.)
close this folderCHAPTER NINE - DERRICKS, SHEERS, AND GYNS
View the documentDerricks, Sheers, and Gyns
Open this folder and view contentsStanding Derrick (Figure 9:1)
Open this folder and view contentsSheer Legs (Figure 9:2)
Open this folder and view contentsGyns or Tripods (Figure 9:3)