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.
Life Expectancy, Death Rates & Final Conclusions As we saw, the TDA study yields 10 â 15 years of life in the commercial diving occupation. But in the end, an underwater welderâs life expectancy doesnât solely depend on one factor. The two most important variables of keeping welder-divers safe include proper training and company safety regulations. We know that commercial diving is a dangerous profession. But itâs necessary, just like topside construction.