Drilling Apparatus?, Davis Lock (2 of 2)

Photograph showing workmen using steam-powered drills, probably for setting blasting powder for the excavation. The depth of the pit is visible.
Abstract/Description: Photograph showing workmen using steam-powered drills, probably for setting blasting powder for the excavation. The depth of the pit is visible.
Subject(s): Boats and boating
Soo Locks (Mich.)
Date Created: 1911 (approximate)