Pathfinder Dam, bulkhead for closing tunnel - NARA - 294400 - PICRYL - Public Domain Media Search Engine Public Domain Search
Pacific Northwest Floating Bulkhead - River Engineering + Water Resources - Ayres
Hinged Floating Bulkhead Saves Time, Money on Hydro Projects - Ayres
Challenging bulkhead design: Dam closure system at Broken Bow and Hugo Lakes < Mead & Hunt
Fabricated Gates - Fresno Valves & Castings
Dams & Civil Structures: A Challenging Gate Repair at Cowlitz Falls
Floating Bulkhead Saves Dam Operators Time, Money - Ayres
Another "biggest" being designed for dam - The Star
Alltech Engineering - The Keystone Dam project consisted of fabricating a floating bulkhead in sections, designing and fabricating a temporary holding stand, welding and assembling the bulkhead on site, and much more.