Got trained on a 15 ton grove mobile crane and ran it a few times a year. Never did run it on any critical lifts.
Also spent some time hanging off the hook in a basket. Did many regular crane inspections on our bridge cranes, jib cranes and the Polar crane.
The turbine building bridge cranes were 260 toners and the polar crane was about 280 ton.
Got into training and qualifying our new guys in the shop on those.
Most folks don,t realize that the signal man is the real operator of a crane. The guy at the controls is just pulling and pushing levers under the direction of the signalman.
Don