Plate 68 — River valley industrial works, rail bridge, night
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Atmospheric Survey — Night Operations

Plate 68 — River valley industrial works, rail bridge, night

River Engineering Bureau — Observation Survey, river valley approach, night conditions
Department River Engineering Bureau
Date c. 1900–1920 (undated)
Conditions Night, fog, overcast, active stacks, light reflection on water
District District 3 — Furnace District
Accession No. 03-1900-000068
Observation Note “Smoke columns merg­ing with ridge fog at time of expo­sure. Rail bridge illu­mi­nat­ed at midspan.” — Obser­va­tion Log 5B, Sta­tion unknown
Filed under Night Operations Structural Works Mechanical Systems Rail Infrastructure Smoke Conditions Fog Survey Low Visibility