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Old 05-11-2019, 05:05 PM   #5816 (permalink)
aerohead
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Critical metals/minerals

The subject came up about strategic materials and our future.Here are some mentioned:
bauxite
caustic soda
coal
copper
diamond
gallium
germanium
indium
iron oxide
lead
limestone
lime
nickel
rare earths (perhaps some are already listed here)
silver
tantalum
tellurium
uranium
vanadium
zinc sulfide
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