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Bismuth
6
Bromine
6
Copper
6
D-ANDRILL
6
Drilling/drill rig
6
Gallium
6
Gold
6
Iron
6
Lead
MIS
6
McMurdo Station
6
Nickel
Rhodium
6
Rubidium
6
Ruthenium
6
Strontium
6
Yttrium
5
Zinc
5
Zirconium
5
Aluminium
4
Argon
4
Barium
4
Calcium
4
Chlorine
4
Chromium
4
Cobalt
4
Event label
4
Manganese
4
Phosphorus
4
Potassium
4
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