File:FMIB 49890 Reinforced concrete cylinders placed in open caissons, Pier 38, San Francisco 12 years exposure, excellent condition.jpeg
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FMIB_49890_Reinforced_concrete_cylinders_placed_in_open_caissons,_Pier_38,_San_Francisco_12_years_exposure,_excellent_condition.jpeg (483 × 587 pixels, file size: 115 KB, MIME type: image/jpeg)