On Sunday, June 21, 2015 at 9:45:34 PM UTC-4, Ignoramus11174 wrote:
I am thinking about buying an all terrain crane and I am confused
about whether its operator need to be licensed or certified, or both.

OSHA seems to have strict requirements for cranes used in
construction, but I do not do construction. What I do (machine moving
and removal) is called "general industry".

Does anyone here own a crane or have a good idea on this?

In Illinois there is, the operating engineer's local 150 Heavy Equipment Operator Training School
19800 W South Arsenal Rd, Wilmington, IL 60481