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| Name | Structure | Site | Collection | Piece/ID | |
 | Blowing Engine | General View | Principio Furnace | Vogel Slide Collection | 3-61 [912] |
 | Blowing Engine | Details | Principio Furnace | Vogel Slide Collection | 3-62 [913] |
 | Furnace and blowing engine | General View | Principio Furnace | Vogel Slide Collection | 3-63 [914] |
 | Furnace and blowing engine | General View | Principio Furnace | Vogel Slide Collection | 3-64 [915] |
 | Office | General View | Principio Furnace | Vogel Slide Collection | 3-65 [916] |
 | General View | Aerial View | Principio Furnace | Vogel Slide Collection | 3-66 [917] |
 | Blowing Engine | Details | Principio Furnace | Vogel Slide Collection | 3-67 [918] |
 | Furnace and blowing engine | General View | Principio Furnace | Vogel Slide Collection | 3-68 [919] |
 | Blast Furnace | Air Heaters | Principio Furnace | Vogel Slide Collection | 3-69 [920] |