Scientific 44 … Cross-section of emergency dam in the closed posi- Diagram showing Portable grab-bucket crane unloading crushed rock from scows in the Miraflores the two locks and piers will be about 2,800 tion, with wicket girders down and sliding are liftedfi old French canal at the Gatun docks. feet in length.…
Plaster · Mold · Center · Bounding · Boiled · Gatun · Pedro miguel · Scientific American · Plaster sides · Iron core · Final positions · American july · Square abcd · Stove pipe · Cubic yards · Plaster mold
Internet Archive · Public domain (published before 1931). Free to use for anything.
