Standard Postcard-a standard postcard mails First Class at current rate of 35Â¢. The smallest maiLabel size for ANY postcard is 3Â½â³ x 5.â³. The largest postcard size for mailing at the 35Â¢ rate is 4Â¼â³ x 6.â³. The paper thickness must be at least 0.007 â³ and not more than 0.016 â³ in thickness.
1 Prohibits head first diving in water depths less than 8 feet. 2  Restricts use of starting blocks to competitive swimmers or swimmer training activities.  Requires new installation (effective October 7, 1992) of starting blocks to be in the deep end in at least 6 feet of water.
Here is a partial list of things that are more dangerous than scuba diving: Riding a bicycle on a city street; Being a passenger in an automobile; Riding a motorcycle; Smoking tobacco; As for non-fatal injuries it is well known that most injuries happen to scuba divers while they are still on the boat. The point of this is not to say that scuba diving is safe.