The machine that was invented called the “crane” is equipped and fitted with a derrick or so also known as a tower. There are plenty of cranes that are used today, these cranes are able to pull things up and down with the built in pulleys and cables that is part of itself. Heavy equipment manufacturers and those that are in the construction industry treat cranes as one of the important parts of their work since cranes are able to do various activities that are interconnected with their process of building a structure. Cranes that are used in the construction industry are naturally and mostly a temporary structure that does not last long, it is built or mounted on a vehicle which the vehicle is specifically built to be able to carry the temporary crane or it can also be fixed to the ground either way is alright and being done.
Cranes have various ways of being controlled whether be it by radio control, infrared control or a built in control station that there will be a person inside doing the pushing and operating of the vehicle. Control stations are required to have a person manning them and the person manning them are also required to know the standardized hand signals so that the controller on the crane is able to communicate with the foremen/construction workers/personnel on the ground and can be able to identify which task is needed to be done as well to avoid any unwanted accidents that might occur. Plenty of materials can be loaded quickly to areas with great precision through coordination and signals that are being sent by an experienced crane crew and through this would enable the crane to function at its maximum capacity and efficiency.
As always, there are doubts from the public whether cranes are safe for the workers that are working on the ground, since lately there had been quite an increase in accidents that have resulted in serious injuries or even death due to crane related accidents. Construction companies have invested a lot of funds for the improvement of cranes whether be it technologically or just simple education programs for those that are using it to combat the high risk of crane related accidents.