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When were cranes invented?
Cranes have been around for centuries, dating back to Ancient Greece, where they were powered by human or animal labor. Over time, they evolved with technological advances, such as the introduction of steam power in the 19th century, followed by electric and hydraulic cranes in the 20th century... -
What subpart is signals for cranes & derricks in construction found under?
Can anyone clarify which subpart the signals for cranes and derricks in construction are found under in the regulations?