This page originally appeared on Thomas Ehrenreich's Railroad Extra Website
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Rock Channeler at Work.
These Machines were Used in the Pedro Miguel Lock, Where the Natural
Foundation was Hard Trap Rock.
They Cut Grooves Into this Rock to the Required Depth for the
Installation of the Floor Culverts, After which
the Material was Blasted Loose, the Aim Being Not to Disturb the
Rock Between the Culvert Trenches.
They were also Used in the Canal Near Bas Obispo where the Excavation
was Through Solid Rock.
Panama and the World's Greatest Canal—by Ralph E. Emery-1915—Leslie-Judge
Company Panama Canal | Contents
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