The students also found out that mining projects in particular can be very harmful because the chemicals used and the minerals that are extracted are themselves poisonous in high concentrations. Methods of disposing of the poisonous waste are usually expensive. Sometimes, because of this, the mining company may decide that the mine will not be profitable so they stop the development.
The government has a difficult decision to make, whether to preserve the environment and risk the project shutting down, or to allow damage to the environment and receive the benefits of the project.
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