Yes, I did get "lucky" and got ONE drop from the volcano that added 1060 to my score. Still, as of today, I have only had that one drop. It was the same last time this event came around. Its not that it does not drop, the issue is there is just one volcano and it only can be acessed once per hour. Most other drops can be attempted in units of six (for buildings) or much higher units for planes. Plus, bonus items can be used on buildings to make them able to click again faster, and on planes there are a lot of bonus items including using fuel to speed them up. Can't do that with this stupid volcano. So it just seems like the drop rate is worse, but its not really. You just can't click it as often.