an airport security manager actually opened the pipe bomb and dumped the contents, apparently oblivious to the potential for triggering a deadly explosion.
The documents also show that a manual swab and an explosives-detection test failed to detect the pipe bomb. Worse, a trainer for the Canadian Air Transport Security Authority (CATSA) did not recognize it was an explosive device and left it in her office over the weekend.
Edmonton airport screener opened pipe bomb - Edmonton - CBC News There's lots of pipe bombs that go off accidentally when a bit of gunpowder gets caught in the threads. The bombmaker and manager were very lucky.