USS Maine (ACR-1)- Gearing for Coal Bunker Vertical Sliding W. T. Door. - NARA - 100382318.jpg
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USS Maine (ACR 1) Gearing for Coal Bunker Vertical Sliding W. T. Door. NARA 100382318, USS Maine (ship, 1895), US National Archives series: Alphabetical Series of Ship Engineering Drawings, Images from the National Archives and Records Administration, US National Archives location: other, USS Maine (ACR-1): Gearing for Coal Bunker Vertical Sliding W. T. Door.
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sliding door vertical section leverage gearing