It should be possible to get to 10. Maybe you're missing a certain delegate in the management screen for your country for the last point.
Sometimes, when you click or press on an enemy to select it, an invisible cursor remains on that target and causes it to stay as the default target. Clicking/pressing on the other enemy might solve the issue. However, the fire raid girls had that targeting issue for a while, and while I made some changes to them, they somehow keep being annoying with it.
Make sure you had the scene with f-Brad and finished at least one wedding.
The mining locations are in Thremten Forest, South Dungeon, Crysthaven dungeon, Lualombo dungeon, Newkungu dungeon, Calterburry haunted mines, Jade Cave, and Old Ashton dungeon. Since the mining spots are re-usable, you don't need to find all locations to "get all loot". If you advanced the story to the time skip phase, you can also buy all of the minable augments from the store.