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.
Execution of Duties. USPS mail handlers are employed as full-time, part-time, and part-time flexible workers. Full-time mail handlers work eight-hour shifts five days a week according to the National Postal Mail Handlers Union, or NPMHU, while part-time employees keep a regular schedule of under 40 hours per week.ther improvements in mail processing and sorting, as well as a decline in first-class mail delivery, also led to the USPS offering buyouts to 45,000 mail handlers in 2012.