What if the crane is not equipped with an attendant?

By the driver. According to relevant information, state-owned enterprises are equipped with riggers, while private enterprises are served by drivers when they are not equipped with waiters. Crane is a kind of machinery used to lift, raise, lower or horizontally move heavy objects, which can be divided into two types: mobile and fixed, and is mostly used in shipyards, factories, construction sites, docks and mines.