Active mining in Gallia is restricted to Aluminium (Picardy), Beryllium (Tau 23), Scrap (generally Burgundy and IDF but not restricted to).
Other fields do produce ore but in such very small amounts that you will die of old age/boredom before filling a Rock Badger let alone a 5ker.
'I would like to be half as clever as some people like to believe they are' Life is full of disappointments, it is how we handle them that helps to define us, as a person