Smith hammer and sledge hammer use the wrong weapon class. Currently they utilize and raise wrestling instead of macing. The pickaxe raises lumberjacking which seems odd.
pickaxe is 1hander so that is especially odd if it gains LJ it seems likely it receives an LJ bonus too smith and sledge hammer were mace weapons on osi although i think they were too terrible to use. But when AoS came out they even received their own special moves