At G4G13, I presented Hazmat Cargo, a 9-piece packing puzzle. The only 9-piece subset of the hexominoes to have a single solution on an 11x11 board where no 2 pieces touch, not even at a corner. This work has continued and eighteen 9-piece subsets of the heptominoes have been found which have a single solution on the 12x12 board. These 18 sets are compared and one given the title Hazmat Cargo 2.