The US Federal Emergency Management Agency (FEMA) published a book in March 1989 describing how to build a gas generator in an emergency when oil was not available.
USA Föderaalne Eriolukordade Agentuur (FEMA) avaldas märtsis 1989 raamatu, kuidas ehitada puugaasigeneraatorit juhuks, kui naftat pole saadaval.