At 600 locations around Sweden, companies want to build mines. This shows a survey that SVT's Assignment Review has done.

Oviken in Bergs municipality is one of these places. But here the politicians are clear - they do not want any mining in their municipality, even if it would mean jobs.

- When it comes to mining in the Oviksbygden, which is so close to Lake Storsjön, we say no. We protect the water, says Therese Kärngard.

Heavy metals can end up in the water

In the town hall we also meet Anders Olof Öhlén. He works as an official and is a trained natural geologist. He has been tasked with keeping a specific eye on mining issues on behalf of the municipality. And he too is convinced that the environmental risks of mining are too great.

- When it comes to just Oviken, you want to break into alum slates and there are many different types of metals. Apart from the fact that there is vanadium and uranium, there are also various heavy metals. And we don't want that out in the water.

Increased awareness of companies

EU Energy is a Canadian company seeking extraction rights in Oviken. In November last year, their representative, Jack Purdy, was at a meeting in Jämtland and then he said that there is an increased awareness of the sensitive environments that need to be protected.

He also told us that they had consultants who looked at the necessary measures to protect the environment. But in Berg's municipality you are still skeptical.

- There is nothing that says that one hundred percent can guarantee that it will not, over time, begin to leach out and move down the bedrock and eventually out into the Great Lakes, says Anders Olof Öhlén.

In the clip above you can hear more about why Bergs municipality says no to mining in Oviken.