Hrrm. Let's see. The boom levels experienced at these sites caused no greater response than the environment (weather, people, traffic). At two of the sites no

Hrrm. Let's see. The boom levels experienced at these sites caused no greater response than the environment (weather, people, traffic). At two of the sites no boom damage was observed, however at Castleward house on two occasions a few roof slates were cracked and loosened. No conclusions could be reached as to the cumulative effect on a building of a large number of booms. Just from the abstract. No mention of altitude, could still have been relatively low, still climbing. Which always could be avoided by climbing slower.