Photographs and Off-line Digital Images
C 68501 Records of the Royal Commission on the Ancient and Historical Monuments of Scotland (RCAHMS), Edinbu
View from SW of SE side of works, with two wooden fresh water tanks in distance
8/5/1996
Item Level
Photographs and Off-line Digital Images
C 68518 Records of the Royal Commission on the Ancient and Historical Monuments of Scotland (RCAHMS), Edinbu
View from SSW of SW end of works, containing weed stores (left), and settling tanks (right)
8/5/1996
Item Level
Photographs and Off-line Digital Images
C 68531 Records of the Royal Commission on the Ancient and Historical Monuments of Scotland (RCAHMS), Edinbu
General view of works from WNW
8/5/1996
Item Level
Photographs and Off-line Digital Images
C 68544 Records of the Royal Commission on the Ancient and Historical Monuments of Scotland (RCAHMS), Edinbu
View from NW of northern part of works, comprising buildings dating from the establishment of the factory by the Ministry of Supply during World War Two (early 1940s)
8/5/1996
Item Level
Photographs and Off-line Digital Images
C 68555 Records of the Royal Commission on the Ancient and Historical Monuments of Scotland (RCAHMS), Edinbu
General view of works from NE
8/5/1996
Item Level
Photographs and Off-line Digital Images
C 68556 Records of the Royal Commission on the Ancient and Historical Monuments of Scotland (RCAHMS), Edinbu
View from NE of NE end of main block of factory, containing alginic acid 'Morton' mixers and dryers and finishing plant
8/5/1996
Item Level
Photographs and Off-line Digital Images
C 68557 Records of the Royal Commission on the Ancient and Historical Monuments of Scotland (RCAHMS), Edinbu
View from E of ancillary buildings on N side of plant, with Quality Control Laboratory in foreground
8/5/1996
Item Level
Photographs and Off-line Digital Images
C 68558 Records of the Royal Commission on the Ancient and Historical Monuments of Scotland (RCAHMS), Edinbu
View from NE of Main Offices
8/5/1996
Item Level
Photographs and Off-line Digital Images
C 68560 Records of the Royal Commission on the Ancient and Historical Monuments of Scotland (RCAHMS), Edinbu
View from SE of NE end of main production block, including tower-mounted cast-iron water tank
8/5/1996
Item Level
Photographs and Off-line Digital Images
C 68503 Records of the Royal Commission on the Ancient and Historical Monuments of Scotland (RCAHMS), Edinbu
View from W of Main Offices (28/3/96)
8/5/1996
Item Level
Photographs and Off-line Digital Images
C 68505 Records of the Royal Commission on the Ancient and Historical Monuments of Scotland (RCAHMS), Edinbu
View from SW of northern part of works,including Boiler House, comprising buildings dating from the establishment of the factory by the Ministry of Supply during World War Two (early 1940s)
8/5/1996
Item Level
Photographs and Off-line Digital Images
C 68507 Records of the Royal Commission on the Ancient and Historical Monuments of Scotland (RCAHMS), Edinbu
View from SW in Weed Store, showing stocks of Laminaria Hyperborea, a seaweed from the Outer Hebrides and Ireland
8/5/1996
Item Level
Photographs and Off-line Digital Images
C 68509 Records of the Royal Commission on the Ancient and Historical Monuments of Scotland (RCAHMS), Edinbu
General view from E of Stem Mill, which comprises shaking conveyors which shake off sand and shells (left), and primary and secondary mills (centre and right)
8/5/1996
Item Level
Photographs and Off-line Digital Images
C 68510 Records of the Royal Commission on the Ancient and Historical Monuments of Scotland (RCAHMS), Edinbu
View from E in Weed Store, showing sacks of milled weed awaiting processing into alginate
8/5/1996
Item Level
Photographs and Off-line Digital Images
C 68512 Records of the Royal Commission on the Ancient and Historical Monuments of Scotland (RCAHMS), Edinbu
View from NE of Mature Tanks, in which milled weed matures at approximately 80 degrees C for 3-4 hours, after first being mixed with hot water and alkali. There are ten operational welded-steel cylindrical tanks, the output of which is sodium alginate paste
8/5/1996
Item Level
Photographs and Off-line Digital Images
C 68513 Records of the Royal Commission on the Ancient and Historical Monuments of Scotland (RCAHMS), Edinbu
View from SE of Slurry Area (with empty slurry tanks visible), where sodium alginate paste is mixed with 'feedback' (dilute alginate solution from an intermediate recovery process), producing slurry.
8/5/1996
Item Level
Photographs and Off-line Digital Images
C 68514 Records of the Royal Commission on the Ancient and Historical Monuments of Scotland (RCAHMS), Edinbu
General view from SW of Settling Vats
8/5/1996
Item Level
Photographs and Off-line Digital Images
C 68515 Records of the Royal Commission on the Ancient and Historical Monuments of Scotland (RCAHMS), Edinbu
General view from NE of Settling Vats, with Continuous Process Vats (with stirrers) in foreground (28/3/96)
8/5/1996
Item Level
Photographs and Off-line Digital Images
C 68517 Records of the Royal Commission on the Ancient and Historical Monuments of Scotland (RCAHMS), Edinbu
Detailed view of Separation Unit, part of the Continuous Process
8/5/1996
Item Level
Photographs and Off-line Digital Images
C 68519 Records of the Royal Commission on the Ancient and Historical Monuments of Scotland (RCAHMS), Edinbu
View from NE of Decant and Feedback Tank, with Settling Vats in background. The Feedback is sent to the Slurry Area to be mixed with Sodium Alginate Paste to become slurry
8/5/1996
Item Level
Photographs and Off-line Digital Images
C 68520 Records of the Royal Commission on the Ancient and Historical Monuments of Scotland (RCAHMS), Edinbu
View of Conversion Vat No.5, in which calcium chloride is added to alginate liquor, producing Calcium Alginate Pulp
8/5/1996
Item Level
Photographs and Off-line Digital Images
C 68521 Records of the Royal Commission on the Ancient and Historical Monuments of Scotland (RCAHMS), Edinbu
Detail of Floatation Vat No.4, in which Calcium Alginate pulp is allowed to float on the surface of the vessel and swept off by rotating paddles, after which it passes through the dejuicer
8/5/1996
Item Level
Photographs and Off-line Digital Images
C 68523 Records of the Royal Commission on the Ancient and Historical Monuments of Scotland (RCAHMS), Edinbu
General view of Leaching Area, showing Con Vat and Dejuicer Units. In this process, the Calcium Alginate is reacted with sulphuric acid in staged additions, resulting in the removal of the calcium and the creation of the Alginic Acid
8/5/1996
Item Level
Photographs and Off-line Digital Images
C 68524 Records of the Royal Commission on the Ancient and Historical Monuments of Scotland (RCAHMS), Edinbu
View of two of the three Stord Bartz Presses, used to increase the solids content of the Alginic Acid from 10 to 30%
8/5/1996
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