Locks (Hydraulic engineering)
Engineering drawing for a lock ("Bowen style of twin-tank counterbalanced lift locks"), Niagara River, New York and Ontario, Canada
Mitre sill and gate recesses for locks on the Delaware and Hudson Canal
Lock gate irons for the Delaware and Hudson Canal
Isometric view of lower lock gate machinery used on the Delaware and Hudson Canal
Lock gates for the Delaware and Hudson Canal type used 1827-1850 /
Dry wall lock with timber & plank facing
Cascade Locks and Mt. Adams
Stereographs of Michigan's Upper Peninsula
[Ship going through the Miraflores Locks of Panama Canal]
[Ship going through the Miraflores Locks of Panama Canal]
Showing east & center walls Miraflores locks
Building Miraflores lock
Miraflores lower locks. Looking north, from crane, showing east and west chamber. Upper locks in distance
View of double locks looking towards the Atlantic entrance, Gatun Locks, Panama Canal
Miraflores Locks showing control house nearing completion and lock gates (in left) completed ready for passage of first ship
Paper mill, Combined Locks, Wis.
The approaches to Gatun Lock
Great cranes in Miraflores Lock
View of Ft. Clayton, Panama Canal, Miraflores Lock and Lake, 1936
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