OK, while reading through that Korean War history I mentioned in an earlier thread ("The Forgotten War" by Clay Blair), I came across a passage where Blair quotes Courtney Whitney, an aide to General Matthew Ridgeway, describing a possible Ridgeway plan in which North Korea would be bombed to destroy critical infrastructure, Taiwanese troops would land on both coasts of North Korea, and to keep CCF and Soviet forces from crossing the Yalu, "a defensible field of radioactive wastes, the by-product of atomic manufacture" would be used to deny any access across the Yalu.
Would this plan have been practical or possible? What would the Soviet reaction to it be? Did anyone else consider something like this in other places?