The jar inspection and service record is current before this crane lifts the jar.
The elevator latch closes fully and the pin or retainer is seated.
The rated load on the elevator is at or above the string weight.
The inspection tag is on the lifting gear and is still in date.
The line of fire under the load and along the fall path is clear.
Slings and shackles for this pick are rated, inspected and not shock loaded.
