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Here’s where the oldest evidence of lead pollution comes fromResearchers studying sediment cores recovered from mainland ... lead was released into the atmosphere as a byproduct of smelting ore for copper and silver. The toxic metal later condensed as ...
Red Metal’s first scout drill hole at its Bluebush silver-lead-zinc prospect in northwest Queensland has delivered 73m at 9g/t silver, including 12m at 19 g/t silver.
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