OTTUMWA, Iowa (AP) – A federal safety agency has proposed fining the Ottumwa post office $46,600, saying postal officials had exposed mail carriers to excessive heat on at least two occasions. The Occupational Safety and Health Administration said in a news release Tuesday that on June 10 a carrier reported heat illness symptoms and requested relief but was told to complete the route. The heat index that afternoon was 100 degrees. OSHA also says a different Ottumwa mail carrier was hospitalized for heat illness on July13. The carrier also had asked for relief due to feeling ill but was told to complete the route.