For a burn off gas to a big seller it went! It was once burned off at the well as it was junk. Some owners if they lived on site had it piped to a tank. Then overflow was vented to the stack. Now it is saved and made. Once there was a seasonal switch from Butane in the summer to Propane in the winter, but now - they just say LPG. It can be most anything. A chemical name Propane is a specific - kept them within bounds. Now they have leeway. Martin
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