Adze
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An adze or adz is an ancient and versatile cutting tool similar to an axe but with the cutting edge perpendicular to the handle rather than parallel. Adzes have been used since the Stone Age. They are
Native Alaskan boat builder using an adze c.1910
Contemporary stone adzes from New Guinea
19th century catalogue showing various adze and axe heads
Micronesian of Tobi, Palau, making a paddle for his wa with an adze
Halligan bar
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A Halligan bar is a forcible entry tool used by firefighters.
Adze
…The head of an ice axe typically possesses an adze for chopping rough steps in ice. A firefighter tool called the Halligan bar has a dull adze on one end of the bar. This bar is a multipurpose tool for forcible entry of a structure and demolition with a forked pry-bar on one…
Halligan bar
The adze and pick end of a Halligan
A Halligan tool on display at the NYC Fire Museum (middle), next to the earlier Kelly tool (2nd from left) on which it was based
A Halligan and flat head axe. When joined they are known as "the irons"