A slight problem with the mine idea: isn't the area contaminated with coal dust to the point that there is no wildlife?
What if we choose a site that is surrounded by boreal forest? Then machetes will be cumbersome rather than useful, because this is an environment where you specifically want an axe.
(although I admit that personally I would favour my kukri: can handle wood and can still act like a machete, but hey, owner's bias).
The suggestion for the "ninja sword" however is indeed retarded. While relatively cheap in this endeavour, it is useless: there will be very few people able to use it properly, it is a weapon against humans with no other function and it is an invitation for jackasses to do something very stupid.
Meanwhile, crossbows can be used for hunting and their use can be easily learned.
Again, this is why I suggested a forge: if necessary, we can make our own tools in case whatever happens.