File:The Arsenic Labyrinth at Botallack Mine - geograph.org.uk - 490315.jpg
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The_Arsenic_Labyrinth_at_Botallack_Mine_-_geograph.org.uk_-_490315.jpg (640 × 458 pixels, file size: 61 KB, MIME type: image/jpeg)
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[edit]DescriptionThe Arsenic Labyrinth at Botallack Mine - geograph.org.uk - 490315.jpg |
English: The Arsenic Labyrinth at Botallack Mine Arsenic compounds were an unwanted pollutant in tin ore which ruined the smelting process. The solution was to heat the ore to drive off the arsenic as a vapour. In the early days of mining this badly polluted the surrounding countryside. However arsenic itself proved to be a saleable by-product so the arsenic fumes were sent through a labyrinth of tunnels where it would condense on the tunnel walls. This photo shows part of the arsenic labyrinth at Botallack mine. The maze of tunnels has partially collapsed. Half way through the labyrinth, the tunnel passes over the top of an arch to cross one of the entrances to the mine. At the end of the labyrinth the remaining fumes passed up the tall chimney shown in the photograph. |
Date | |
Source | From geograph.org.uk |
Author | Tony Atkin |
Attribution (required by the license) InfoField | Tony Atkin / The Arsenic Labyrinth at Botallack Mine / |
InfoField | Tony Atkin / The Arsenic Labyrinth at Botallack Mine |
Camera location | 50° 08′ 24″ N, 5° 41′ 25″ W | View this and other nearby images on: OpenStreetMap | 50.140120; -5.690200 |
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Object location | 50° 08′ 25″ N, 5° 41′ 28″ W | View this and other nearby images on: OpenStreetMap | 50.140360; -5.691200 |
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Licensing
[edit]This image was taken from the Geograph project collection. See this photograph's page on the Geograph website for the photographer's contact details. The copyright on this image is owned by Tony Atkin and is licensed for reuse under the Creative Commons Attribution-ShareAlike 2.0 license.
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This file is licensed under the Creative Commons Attribution-Share Alike 2.0 Generic license.
Attribution: Tony Atkin
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 06:15, 5 February 2011 | 640 × 458 (61 KB) | GeographBot (talk | contribs) | == {{int:filedesc}} == {{Information |description={{en|1=The Arsenic Labyrinth at Botallack Mine Arsenic compounds were an unwanted pollutant in tin ore which ruined the smelting process. The solution was to heat the ore to drive off the arsenic as a vap |
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Camera manufacturer | Canon |
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Camera model | Canon EOS 350D DIGITAL |
Exposure time | 1/500 sec (0.002) |
F-number | f/18 |
ISO speed rating | 400 |
Date and time of data generation | 12:19, 7 July 2007 |
Lens focal length | 41 mm |
Orientation | Normal |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
File change date and time | 12:19, 7 July 2007 |
Y and C positioning | Co-sited |
Exposure Program | Normal program |
Exif version | 2.21 |
Date and time of digitizing | 12:19, 7 July 2007 |
APEX shutter speed | 8.9657897949219 |
APEX aperture | 8.33984375 |
APEX exposure bias | 0 |
Metering mode | Pattern |
Flash | Flash did not fire, compulsory flash suppression |
Color space | sRGB |
Focal plane X resolution | 3,954.233409611 |
Focal plane Y resolution | 3,958.7628865979 |
Focal plane resolution unit | inches |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Scene capture type | Standard |