Figure 1
Roro village, with an asbestos pile in the center, and surrounding study villages.
Figure 2
The Roro hill top with mine waste deposits at multiple locations.
Figure 3
Soil sample locations in villages around the mine.
Table 1
Soil sample location with results for asbestos testing.
| SAMPLE NUMBER | VILLAGE | COORDINATES OF SAMPLE LOCATION | PRESENCE OF ASBESTOS (Y/N) | TYPE OF ASBESTOS | FIBER TYPE (LAF/SAF) | |
|---|---|---|---|---|---|---|
| LATITUDE | LONGITUDE | |||||
| 1. | Tilaisud | 22.501751 | 85.661413 | No | — | |
| 2. | Tilaisud | 22.501200 | 85.662803 | Yes | Chrysotile | LAF |
| 3. | Tilaisud | 22.499486 | 85.663327 | Yes | Chrysotile | LAF |
| 4. | Tilaisud | 22.499171 | 85.663658 | Yes | Chrysotile | LAF |
| 5. | Roro | 22.482237 | 85.648328 | Yes | Chrysotile | LAF |
| 6. | Roro | 22.548490 | 85.796351 | Yes | Chrysotile | LAF |
| 7. | Roro | 22.479828 | 85.652669 | Yes | Chrysotile | LAF |
| 8. | Roro | 22.478254 | 85.653222 | Yes | Chrysotile | LAF |
| 9. | Birsingh Hatu | 22.472362 | 85.656727 | Yes | Chrysotile | LAF |
| 10. | Birsingh Hatu | 22.548604 | 85.796713 | Yes | Chrysotile | LAF |
| 11. | Birsingh Hatu | 22.548529 | 85.795499 | Yes | Chrysotile | LAF |
| 12. | Birsingh Hatu | 22.548333 | 85.796530 | No | — | |
| 13. | Singijari | 22.550501 | 85.805749 | No | — | |
| 14. | Singijari | 22.550132 | 85.805201 | Yes | Chrysotile | LAF |
| 15. | Singijari | 22.550127 | 85.805100 | Yes | Chrysotile | LAF |
| 16. | Singijari | 22.550172 | 85.805201 | No | — | |
Figure 4
Asbestos fiber from sample 3 as seen under an electronic microscope.
Figure 5
Image of asbestos fiber under an electron microscope and chemical analysis of the fiber with element composition at the marked point of the fiber.
Table 2
The table from the report of soil test results for sample 2, giving the element composition of the identified fiber, which helps identify it as chrysotile asbestos.
| ELEMENT | LINE | ATOMIC PERCENTAGE (%) | ATOMIC RATIO | CONCENTRATION (WT%) |
|---|---|---|---|---|
| Mg | Ka | 50.713 | 1.0000 | 46.584 |
| Si | Ka | 48.240 | 0.9512 | 51.205 |
| Fe | Ka | 1.047 | 0.0207 | 2.210 |
| 100.000 (Total) | 100 (Total) |
Figure 6
Area of asbestos spread analyzed using temporal Google Earth satellite imageries and super imposed over the FCC of Sentinel 2 images.