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General MotorsThe treasure of the Sierra Madre; pyrolysis promises rich rewards, but they may prove elusiveThe treasure of the Sierra Madre; pyrolysis promises rich rewards, but they may prove elusive
It was early and I'd been up way too late the night before watching an old Humphrey Bogart movie.Some scientists at the General Motors Corp. Technical Center were explaining a complex thermal recycling process called pyrolysis. Somebody said it might someday make it possible to "mine" landfills. That was the trigger.Suddenly I see Bogie, rifle in hand, lying behind a worn-out truck tire on top of
