Crane operators use a heavy industrial and mechanical tower and cable to transport machines, large objects, and other materials. The operator typically extends and retracts booms that lower and raise hooks or other objects attached to load lines. Operators may receive assistance from other employees who help guide them using hand signals or radio communication. Most operators work from an on-board control panel. However, some cranes are able to be operated remotely. The largest number of crane operators work in the manufacturing industry where heavy materials are used. Ship yards would be a good example. Not only do crane operators work to construct new ships, they also participate in the loading and unloading of cargo onto completed ships.There are some important points to consider about