To answer GP's question: it is a transport issue. My aunt's sister and her hubby did a stint a few years ago as truck drivers in the USA. Transporting packets of potato chips (crisps) from California to elsewhere can be a problem: if trucks take the mountain passes to get inland, the packets explode at high altitude, due to the much lower atmospheric air pressure. If I remember their story correctly, potato chips have to be transported around some of the mountain ranges, so's to keep the chip packets intact.(more)
Tuesday, August 24, 2004
Pressure question answered
Colin at the corner office, has answered my question about the effects of altitude and air pressure on the transporting of goods: