Those in the immediate vicinity of the site may hear a 30-second air horn five minutes before a blast occurs, and then three short horn tones five seconds before the blast explosion. Within about a minute of the blast, a 15-second all clear horn will blow once the Master Blaster verifies the completeness of the blast.What a great job title "Master Blaster". You can read the full press release.
Monday, February 22, 2010
Proof that the Silver Spring Transit Center is progressing: Beginning Monday, February 22 (weather permitting) and continuing for 4 to 6 weeks there will be blasting. This blasting will generally start around 11am and continue through nap time (2pm).