Nature
Flame

Frankfort Fuels

Hiller Rinaldo Associates

Gas und Wasserwerke

Othmar Motter

Lebensversicherungen

Heinz Schwabe

The East Ohio Gas Company

Lester Beall

Termoraggi

Veniero Bertolotti

Totalgas

Ilio Negri, Michele Provinciali, Pino Tovaglia

Norris Industries

Eskil Ohlsson