MIDDLESEX CENTRE, ONT. One week after the partial building collapse on Teeple Terrace that killed two workers, the number of vests being hung outside London homes in tribute continues to grow. Almost all of the homes on Old Wonderland Road, some of which back onto the construction site where the collapse happened, have vests hung out front. They’re hung on porches, from mailboxes and in trees as a reminder of the devastating impact of the collapse. Two men, 26-year-old Henry Harder and 21-year-old John Martens, died when a portion of the building collapsed Friday morning as concrete was being poured on the fourth storey.