I want to tell you about a die casting plant in Thailand that was wasting $14,000 per month in energy. They could not figure out why. The furnace was running. The temperature was holding. The metal quality was acceptable. But the gas bill was 22% higher than it should have been. I spent two days on site. The problem was the lid seal. The seal was worn. It was leaking heat. Every time the lid was closed, hot air escaped...