The Game and Wildlife Conservancy Trust have a lot of very useful information on Mink trapping.
It's worth pointing out that you cannot release a mink once trapped. They need to be destroyed humanely. Current advice is to use prometheus rounds from a Webley Typhoon after using a cage comb to position the mink to one end of the cage to enable accurate shooting. This should guarentee an instant kill. Remember to they are actually dead before opening the cage, though as you might get a nasty supprise. Usual technique is to touch the eyeball with a blade of grass to force a blink. If it blinks, then it bites!
It's worth pointing out that you cannot release a mink once trapped. They need to be destroyed humanely. Current advice is to use prometheus rounds from a Webley Typhoon after using a cage comb to position the mink to one end of the cage to enable accurate shooting. This should guarentee an instant kill. Remember to they are actually dead before opening the cage, though as you might get a nasty supprise. Usual technique is to touch the eyeball with a blade of grass to force a blink. If it blinks, then it bites!