Sun glasses are necessary in snowy terrain. Rough mountain slopes demand sturdy shoes. Mountain storms are more frequent in the afternoon than in the morning. Climbers should be prepared to turn back short of their goal to avoid after-dark travel. Keep within sensible fatigue limits.
Extreme weariness makes easy descents hazardous.
Avoid the rotten rock hazard in every way possible. A party should bunch in a loose-rock couloir, and on wider slopes should angle away from the direct line of fall. Rocks should never be rolled for sport. If you have any suspicion that there are climbers below you when you dislodge a missile of any size, call it out loudly. Even the smallest rock set loose can knock free larger rocks or start a cascade of dangerous shrapnel down the slope.