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A comment on Car tires biggest likely source of microplastics in California coastal waters. Parent comment

Re:Car tires biggest likely source of microplastics in Calif... by cwkoss on Wednesday October 02, 2019 @07:22PM (#21141845)
Mining operations rarely find pure metals in the ground. Ore is a dilute mixture of rock with trace metals which must be extracted through processing.
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Re:Car tires biggest likely source of microplastics in Calif... by newnewpdro on Wednesday October 02, 2019 @07:43PM (#21141999)
To categorize what's found on the shoulders of highways entirely as an ore of some trace metal is to completely dismiss the rest of its content as irrelevant, despite being the bulk of its volume, in a discussion ostensibly about pollution.
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