There are many different kinds of Superfund sites. Some Superfund sites are old factories where chemicals were dumped on the ground. Some are landfills where garbage was dumped along with other poisonous waste. Some Superfund sites are remote places where people secretly dumped hazardous waste because they did not know what to do with it. Some Superfund sites are old mines where people used to dig in the ground for things like coal, iron ore, or silver.
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