Show 0 oo AIR MAIL TRAFFIC BECOMES HEAVIER SALT LAKE LAKi Sept Sopt 28 Air 2 Air Air mall shipments ar are continually grow grow- growing tog ing III heavier according to local air airmail airl mall mail l lal officials necessitating tho the frequent use us cf of two planes to handle the load During the past i ef we k the daily load has averaged Letter better Ift er than pounds poun which Is twice th the average a of ot a year y ar ag W Although the capacity of oC the Di Dc I lland lla planes now In use is I pound pounds It Is often necessary to put tut two ships on the flight from Salt u II Lake east because UM of ot their having ha to carry about pounds of or night flying equipment |