Robert has called from Camp 4. After several grueling hours of climbing he made the decision to descend. The weather conditions are abominable. The temperature is about -15 degrees Fahrenheit. An ice and snow mix propelled by 30 to 40 mph winds made visibility close to zero. The climb was too dangerous to continue.
Robert's goggles were iced up and he couldn't see the drop offs. His Sherpa guides did not have goggles and so were not any better off than he. Robert was concerned that their eye sight might be damaged by the strong force of the wind mixed with snow and ice.
He is now in his tent trying to warm up by wearing his down suit inside his sleeping bag. Everything is iced over.
He will call again after a rest.