More importantly, the two disasters are analogous in the unprecedented technical, administrative, and political challenges posed by their remediation. In the case of Chernobyl, the technical difficulty stemmed from the need to handle high level radioactive waste. Chunks of nuclear reactor fuel lay scattered around the ruin of the reactor building, and workers who picked them up using shovels and placed them in barrels received a lethal radiation dose in just minutes. To douse the fire still burning within the molten reactor core, bags of sand and boron were dropped into it from helicopters, with lethal consequences for the crews. Eventually, a concrete sarcophagus was constructed around the demolished reactor, sealing it off from the environment. In the case of Deepwater Horizon, the technical difficulty lies with stemming a high-pressure flow of oil, most likely mixed with natural gas, gushing from within the burned, tangled wreck of the drilling platform at a depth of 5000 feet. An effort is currently underway to seal the leak by lowering a 100-ton concrete-and-steel "contraption" onto it from a floating crane and using it to capture and pump out the oil as it leaks out. I think "sarcophagus" sounds better.