Metals Non-diggers Diggers  P
Median 5<th percentile 95th percentile Median 5th percentile 95th percentile
Aluminum 3,396.620 702.019 6,304.727 3,158.928 655.699 10,483.681 .792
Antimony 0.599 0.196 1.587 0.505 0.166 1.316 .055
Silver 47.598 8.808 298.271 9.283 2.609 58.147 .001
Barium 25.960 12.662 58.601 28.404 15.064 103.191 .254
Beryllium 0.121 0.021 0.689 0.105 0.023 0.897 .971
Cadmium 3.964 1.665 7.340 0.970 0.143 3.521 .001
Calcium 2,892.162 828.778 6,561.749 3,196.970 1,467.965 10,809.026 .191
Cerium 4.217 0.650 10.382 2.763 0.596 6.795 .167
Chrome 21.784 11.901 99.375 10.508 2.776 20.989 .001
Cobalt 264.512 125.313 7,705.622 137.824 76.796 411.232 .001
Copper 2,100.926 794.119 15,830.565 819.337 396.640 1,984.743 .001
Tin 2.693 1.487 5.304 1.493 0.226 2.588 .001
Iron 5,224.602 2,748.125 43,533.441 6,069.128 2,524.179 87,676.446 .396
Magnesium 641.780 334.691 1,445.879 326.083 221.698 664.556 .001
Manganese 348.844 151.426 2,552.529 376.043 161.327 5,641.597 .374
Mercury 5.587 1.336 13.705 4.172 1.111 8.998 .029
Molybdenum 0.614 0.178 1.632 0.528 0.156 1.448 .203
Nickel 34.001 15.806 139.936 17.364 7.786 49.149 .001
Lead 70.737 10.518 295.102 61.369 14.654 225.137 .320
Thallium 0.049 0.028 0.098 0.108 0.045 0.316 .001
Vanadium 50.590 31.938 73.009 98.874 53.271 1,903.890 .001
Zinc 409.339 289.213 1,469.386 289.703 184.187 397.050 .001
Table 4: Metals traces values within artisanal miners according to workstations.