Mining operations often are toxic environments for various reasons aren't they?
Excavation pits can be clean and I'm pretty sure they would have considered what was left in the pit.
What you're thinking of is the processing aspect of mining, which is a whole different beast.
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Excavation pits can be clean and I'm pretty sure they would have considered what was left in the pit.
What you're thinking of is the processing aspect of mining, which is a whole different beast.