Olary Creek Township Mine site Main tailings Repository “TSF” 0.5 km Radium Hill Aerial...
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Transcript of Olary Creek Township Mine site Main tailings Repository “TSF” 0.5 km Radium Hill Aerial...
![Page 1: Olary Creek Township Mine site Main tailings Repository “TSF” 0.5 km Radium Hill Aerial Photograph N.](https://reader030.fdocuments.in/reader030/viewer/2022032415/56649f095503460f94c1d6ee/html5/thumbnails/1.jpg)
Olary Creek
Township
Mine site
Main tailings Repository “TSF”
0.5 km
Radium HillAerial Photograph
N
![Page 2: Olary Creek Township Mine site Main tailings Repository “TSF” 0.5 km Radium Hill Aerial Photograph N.](https://reader030.fdocuments.in/reader030/viewer/2022032415/56649f095503460f94c1d6ee/html5/thumbnails/2.jpg)
Main tailings repository& tailings dispersal
0.2 km
Aerial PhotographMine Site
Waste rock dumps
Projected lineof lode & underground workings
Crushed wastedumps
Former workshops& processing plant
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![Page 3: Olary Creek Township Mine site Main tailings Repository “TSF” 0.5 km Radium Hill Aerial Photograph N.](https://reader030.fdocuments.in/reader030/viewer/2022032415/56649f095503460f94c1d6ee/html5/thumbnails/3.jpg)
Remnants of shaft headframe and ore bins
![Page 4: Olary Creek Township Mine site Main tailings Repository “TSF” 0.5 km Radium Hill Aerial Photograph N.](https://reader030.fdocuments.in/reader030/viewer/2022032415/56649f095503460f94c1d6ee/html5/thumbnails/4.jpg)
High grade U ore samples from dump material (dark minerals and yellow coatings)
Exposure in prospecting pit
of U-mineralised
rock
![Page 5: Olary Creek Township Mine site Main tailings Repository “TSF” 0.5 km Radium Hill Aerial Photograph N.](https://reader030.fdocuments.in/reader030/viewer/2022032415/56649f095503460f94c1d6ee/html5/thumbnails/5.jpg)
Waste rock dump
![Page 6: Olary Creek Township Mine site Main tailings Repository “TSF” 0.5 km Radium Hill Aerial Photograph N.](https://reader030.fdocuments.in/reader030/viewer/2022032415/56649f095503460f94c1d6ee/html5/thumbnails/6.jpg)
Crushed rock dumps
Note: pepper tree (introduced) and various saltbush species that have taken up U on contaminated areas
![Page 7: Olary Creek Township Mine site Main tailings Repository “TSF” 0.5 km Radium Hill Aerial Photograph N.](https://reader030.fdocuments.in/reader030/viewer/2022032415/56649f095503460f94c1d6ee/html5/thumbnails/7.jpg)
Crushed rock
• Used for manufacture of concrete: buildings and other structures
• Road base and road surfacing, work area surfacing
• Bunding for some tailings dams• Railway ballast• Typically contains >250 ppm U
![Page 8: Olary Creek Township Mine site Main tailings Repository “TSF” 0.5 km Radium Hill Aerial Photograph N.](https://reader030.fdocuments.in/reader030/viewer/2022032415/56649f095503460f94c1d6ee/html5/thumbnails/8.jpg)
Effects of dispersion of crushed rock, resulting in large anthropogenic U radiometric anomaly
![Page 9: Olary Creek Township Mine site Main tailings Repository “TSF” 0.5 km Radium Hill Aerial Photograph N.](https://reader030.fdocuments.in/reader030/viewer/2022032415/56649f095503460f94c1d6ee/html5/thumbnails/9.jpg)
Crushed rock use in Radium Hill
townsite
Road surfacingMajor concrete constructions
![Page 10: Olary Creek Township Mine site Main tailings Repository “TSF” 0.5 km Radium Hill Aerial Photograph N.](https://reader030.fdocuments.in/reader030/viewer/2022032415/56649f095503460f94c1d6ee/html5/thumbnails/10.jpg)
Tailings storage facility
Main TSF is about 250 x 150 x 6 m, capped with 1 m soil and subject to rill erosion. It is not a stable landform.
![Page 11: Olary Creek Township Mine site Main tailings Repository “TSF” 0.5 km Radium Hill Aerial Photograph N.](https://reader030.fdocuments.in/reader030/viewer/2022032415/56649f095503460f94c1d6ee/html5/thumbnails/11.jpg)
Rill erosion of main TSF to expose mill tailings with >300 ppm U
![Page 12: Olary Creek Township Mine site Main tailings Repository “TSF” 0.5 km Radium Hill Aerial Photograph N.](https://reader030.fdocuments.in/reader030/viewer/2022032415/56649f095503460f94c1d6ee/html5/thumbnails/12.jpg)
Gully erosion of small TSF
![Page 13: Olary Creek Township Mine site Main tailings Repository “TSF” 0.5 km Radium Hill Aerial Photograph N.](https://reader030.fdocuments.in/reader030/viewer/2022032415/56649f095503460f94c1d6ee/html5/thumbnails/13.jpg)
Dispersal of fine tailings by wind and water erosion (physical, not chemical dispersion)
Dunes of wind-dispersed tailings developed prior to
capping of main TSF
![Page 14: Olary Creek Township Mine site Main tailings Repository “TSF” 0.5 km Radium Hill Aerial Photograph N.](https://reader030.fdocuments.in/reader030/viewer/2022032415/56649f095503460f94c1d6ee/html5/thumbnails/14.jpg)
Contaminated Topsoils – Radium Hill
Radiation levels (up to 10x background)Ce-La-Sc-Th-U-V-Y (up to 100x background)
Tailings dam
Wind dispersion, particularly to the SE
![Page 15: Olary Creek Township Mine site Main tailings Repository “TSF” 0.5 km Radium Hill Aerial Photograph N.](https://reader030.fdocuments.in/reader030/viewer/2022032415/56649f095503460f94c1d6ee/html5/thumbnails/15.jpg)
Soil contamination by windborne tailings, SE
of main TSF
![Page 16: Olary Creek Township Mine site Main tailings Repository “TSF” 0.5 km Radium Hill Aerial Photograph N.](https://reader030.fdocuments.in/reader030/viewer/2022032415/56649f095503460f94c1d6ee/html5/thumbnails/16.jpg)
Soil chemistry affected by addition of wind-borne tailings