How should you signal the crane operator to raise the boom?().
0ur jumbo boom()out of use for a long time.
The jumbo boom can ().
What is meant by spotting the boom?()
0ur starboard derrick boom of hatch No.4 is baddly cracked()that it has become entirely useless.
How should you signal the crane operator to lower the boom and raise the load().
The fitting that allows a boom to move freely both vertically and laterally is called the ().
jumbo boom()
How should you signal the crane operator to lower the boom and raise the load?().
Which two countries led the boom in 2006?