In this photo provided by Jordan McLaughlin, a dust cloud rises as people run from the scene of a building collapse on the edge of downtown Philadelphia on Wednesday. A building that was being torn down collapsed with a thunderous boom, raining bricks on a neighboring thrift store, killing a woman and injuring at least 13 other people in an accident that witnesses said was bound to happen. Photo: AP

In this photo provided by Jordan McLaughlin, a dust cloud rises as people run from the scene of a building collapse on the edge of downtown Philadelphia on Wednesday. A building that was being torn down collapsed with a thunderous boom, raining bricks on a neighboring thrift store, killing a woman and injuring at least 13 other people in an accident that witnesses said was bound to happen. Photo: AP

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In this photo provided by Jordan McLaughlin, a dust cloud rises as people run from the scene of a building collapse on the edge of downtown Philadelphia on Wednesday. A building that was being torn down collapsed with a thunderous boom, raining bricks on a neighboring thrift store, killing a woman and injuring at least 13 other people in an accident that witnesses said was bound to happen. Photo: AP

In this photo provided by Jordan McLaughlin, a dust cloud rises as people run from the scene of a building collapse on the edge of downtown Philadelphia on Wednesday. A building that was being torn down collapsed with a thunderous boom, raining bricks on a neighboring thrift store, killing a woman and injuring at least 13 other people in an accident that witnesses said was bound to happen. Photo: AP

In this photo provided by Jordan McLaughlin, a dust cloud rises as people run from the scene of a building collapse on the edge of downtown Philadelphia on Wednesday. A building that was being torn down collapsed with a thunderous boom, raining bricks on a neighboring thrift store, killing a woman and injuring at least 13 other people in an accident that witnesses said was bound to happen. Photo: AP