The terms pike, pick, mandril and slitter are applied to the collier's pick in different districts, the men being known as pikemen or hewers.
of length, and that a piece of the material may be bent cold 180 over a mandril equal to the thickness of the piece tested without fracture of the fibres on the outside of the bend.
However, before its final and full placement in the atrium the mandril is withdrawn to avoid puncturing the thin-walled right atrial appendage.
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