If you want to invest in copper miners, just go with the Global X Copper Miners ETF
This is especially true if your main goal is getting exposure to the price action in the copper mining segment without spending too much time on it.
Not saying that you shouldn't invest in individual equities, but don't invest in a company just because someone mentioned their ticker on the internet.
Diversifying makes all of the sense in these cases in terms of risk/reward.
This exchange-traded fund is domiciled in the U.S., but also available to retail EU investors via an equivalent UCITS product, so you should be able to find it listed by your preferred broker.
Fund information:
โ Ticker: COPX
โ U.S. ISIN: US37954Y8306
โ EU ISIN: IE0003Z9E2Y3