Can lead to (driving prices up):

1. Not only nationalize in whole or in part. That probably worst but there are lesser possibilities.
2. They can limit the Amounts mined.
3. Demand a greater portion of profits to be paid back to country, i.e. royalties or taxes.
4. Stricter environmental regulations.
5. Native people's demands, ex. jobs > costs of skills upgrade.
6. There are political issues, ex. conflicts or foreigners being not welcome.
These are just a few that come to my mind. We have prime example re our Ring, road delayed for various excuses.
However higher prices for metals are not likely to speed up delivery of road or rail to the Ring, in not so humble opinion. Ed.