A. 1RM Thruster
B. With a continuously running clock complete 5 Thrusters every minute.
From 0:00-5:00 use 30kg/20kg
From 5:00-10:00 use 40kg/30kg
From 10:00-15:00 use 50kg/40kg
Continue adding 10kg every 5 minutes for as long as you are able.
Notes on scaling: I would like to see everybody get at least 10 minutes out of this one. If the prescribed weights are going to see you fail before 10 minutes, then feel free to use smaller increments to keep you in the game for longer.
*Check out the video of a couple of CrossFit elites hitting this one.