Chet, 

Gonna try putting the brisket tags in the calves shortly after they're born.  I'm thinkin' there won't be any chance of frostbite damage in the brisket, and if there is, it's probably too cold for the calf to survive anyway. 

For the most part, just trying to save time re-identifying the calves later after retagging on the first trip through the chute.

What do you use to poke the hole in the brisket?