Apparently there is a mineral called coltan that is used to fabricate cell phones I want to know if it is true and if so is there something else that can be used in its place?
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Type: Posts; User: Fillipe
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Aug 2, 2012, 04:58 AM
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Is there a replacement for the mineral called coltan
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Aug 1, 2012, 11:09 AM
Question: Boeing 797 true or false?
by Fillipe- Answers
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Boeing 797 true or false?
Is the immanent launch of the Boeing 797 fact or fantasy
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