Metals |
Artisanal miners (N=100) |
UNILU’s Students (N=109) |
Median |
5th percentile |
95th percentile |
Median |
5th percentile |
95th percentile |
Aluminum |
3,236.425 |
685.830 |
8,249.292 |
380.379 |
244.454 |
707.794 |
Antimony |
0.550 |
0.173 |
1.423 |
0.076 |
0.029 |
0.139 |
Silver |
15.985 |
2.980 |
153.707 |
0.151 |
0.050 |
0.379 |
Barium |
27.054 |
13.442 |
83.421 |
2.763 |
1.918 |
4.278 |
Beryllium |
0.109 |
0.023 |
0.753 |
0.020 |
0.001 |
0.006 |
Cadmium |
2.152 |
0.153 |
5.795 |
0.322 |
0.118 |
0.487 |
Calcium |
3,083.189 |
1,272.223 |
7,700.213 |
517.859 |
252.870 |
830.368 |
Cerium |
3.406 |
0.623 |
7.529 |
0.421 |
0.305 |
0.535 |
Chrome |
14.221 |
3.765 |
70.311 |
1.161 |
0.680 |
2.124 |
Cobalt |
165.428 |
82.568 |
6,322.123 |
1.667 |
0.802 |
2.402 |
Copper |
1,024.496 |
426.567 |
12,511.666 |
49.859 |
15.965 |
232.124 |
Tin |
1.722 |
0.748 |
4.369 |
0.213 |
0.100 |
0.613 |
Iron |
5,977.558 |
2,692.502 |
73,091.729 |
235.247 |
138.867 |
307.412 |
Magnesium |
420.499 |
225.000 |
1,296.397 |
64.893 |
41.949 |
107.700 |
Manganese |
371.496 |
155.996 |
5,283.831 |
8.901 |
4.352 |
13.350 |
Mercury |
4.397 |
1.148 |
12.820 |
0.341 |
0.190 |
0.598 |
Molybdenum |
0.580 |
0.159 |
1.556 |
0.115 |
0.078 |
0.209 |
Nickel |
20.743 |
9.076 |
87.038 |
0.487 |
0.252 |
0.964 |
Lead |
67.817 |
14.606 |
247.882 |
17.774 |
6.812 |
26.178 |
Thallium |
0.081 |
0.029 |
0.272 |
0.008 |
0.007 |
0.013 |
Vanadium |
66.414 |
33.740 |
1,700.389 |
0.791 |
0.440 |
1.400 |
Zinc |
328.491 |
193.945 |
942.206 |
52.185 |
35.586 |
66.739 |
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