How is possible for a magnetic crane to pick up heavy metal from the ground?

A magnetic crane uses an electromagnet to generate a strong magnetic field, which can attract ferromagnetic materials like iron and steel. When the crane's electromagnet is activated, it magnetizes the metal object, allowing it to lift heavy items from the ground. The crane can then move the object and release it by deactivating the magnet, breaking the magnetic connection. This ability to efficiently handle heavy metals makes magnetic cranes valuable in industries like recycling and construction.