 First characterized as "gas attacks" in 1943, suspicion fell on a variety of possible causes including the smudge pots used by orange growers, the smoke produced by local industrial plants, and car exhausts.The Los Angeles Chamber of Commerce was one of the organizations concerned about the possible causes and effects of smog, as it related both to industry (and jobs) and to quality of life in the area.Beckman was involved with the Chamber of Commerce.