| P number: | P209713 |
|---|---|
| Old photograph number: | A09802 |
| Caption: | Blackpool Pit a china clay working, Burngullow Common, St. Austell. Looking west, Devon. |
| Description: | View of china clay-pit showing two working levels. High-pressure hose ('monitor') directing jet of water on pit wall of lower level; clay-bearing slurry pump to sand-pits at higher level. The high-pressure jets of water strike the working faces of the china clay pits with such force that sizeable boulders are thrown into the air. Quartz grains and then mica are removed from the resulting slurry by sedimentation in channels and settling tanks. The China Clay industry is centred around St. Austell and Lee Moor. The sandy waste is used in bricks and concrete products and the finer 'micas' have been marketed as low grade china clay and used in oil refining as an absorbent and detergent. |
| Date taken: | Mon Jan 01 00:00:00 GMT 1962 |
| Photographer: | Thompson, J.D. |
| Copyright statement: | Crown |
| X longitude/easting: | 198500 |
| Y latitude/northing: | 53500 |
| Coordinate reference system, ESPG code: | 27700 (OSGB 1936 / British National Grid) |
| Orientation: | Landscape |
| Size: | 367.75 KB; 1000 x 800 pixels; 85 x 68 mm (print at 300 DPI); 265 x 212 mm (screen at 96 DPI); |
| Average Rating: | Not yet rated |
| Categories: | Unsorted Images, Geoscience subjects/ Economic geology/ China clay |
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