9-1-1 calls made within moments of the collapse of the I-35W bridge are providing some insight into what callers witnessed the night of August first. The bridge disaster killed 13 people and injured about 100. The Minneapolis Emergency Communications Center released tapes and transcripts of some 40 calls this afternoon in response to media organization requests. Minnesota Public Radio's Tom Scheck and Tim Pugmire listened to the recordings and produced this montage of the calls.