Lift with your knees, not with your back

Not only do we get a lot of mail in, we send a lot of mail out as well! Normally another department takes care of sending out mail, but we are looking after that for the next little while. Its amazing the kinds of things you learn! Yesterday we sent out 81.125kg of mail from here. Thats a fraction over the average weight of a reasonably tall 20 year old male. (and no, no humans were posted.) Not all of it was us, but mostly. Wonder what the postman thought?