Mexico: (2) Popocatepetl volcano (17,887 ft.). On 3 September 1950 a large rock avalanche swept away a group of 25 climbers who were making a climb under the auspices of the Alpine Federation. Two members of the party were killed immediately while a third was buried and not found. A fourth climber later died of injuries while his companions were carrying him down the mountain to Amecameca. Most of the other members of the party were injured by the sliding rocks in the avalanche.
Source of information: member of the Auxiliary American Alpine Club Safety Committee.
Analysis. Insufficient details available from (1) and (2) to warrant comment