Thallium (Tl) belongs to the Group 3 - Boron Family of elements. In the new IUPAC grouping, The Boron family is now Group 13.
Page updated 2/25/2016. Carrier, clerk, mail handlers, and distribution associates are required to take and pass the 473 Postal Exam. Other applicants including motor vehicle operators, mechanic, clerical, electronic technician, machinist, and trades must also pass a written test.
All mail handlers must be at least 18 years old in most cities, although there are no specific educational requirements for the job. Applicants must take and pass Test 473 with a minimum score of 70, according to the United States Postal Service. This test measures candidates' aptitude for mail handler jobs.he top 10 percent made $54,030 or more per year, while the bottom 10 percent made $28,620 or less. Hawaii and Delaware paid the highest average salaries of $49,720 and $49,660, respectively. Those in Alaska averaged the least, at an average of $38,100 a year. Job prospects in the field are not strong.