As the oscillator began grinding the caisson into the earth, the team hit wood at 87 feet, some hand-hewn with axe or adze marks, followed by a massive wrought iron spike at 91 feet, suggesting ...

Adzes have a carved wooden handle lashed to a metal blade. Before the arrival of Europeans the blades of adzes were made of stone. Why do you think people would adopt this new style of adze blades?

Pulaski combines combines an axe and an adze in one head. Wikipedia The Pulaski was created in the years just following the 1910 Big Burn by U.S. Forest Service Ranger Ed Pulaski, and it continues ...