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.
The mail carrier, clerk, and many other post office job occupations presented here are excerpted from Post Office Jobs. The job descriptions show the tremendous diversity that the U.S. Postal Service, a Fortune 500 company, offers. Anyone interested in these jobs will need to take the 473 Battery Test or any one of the other postal exams administered by the Postal Service when they first apply.