At least 40 years ago my old utility had a compressed natural gas program for city buses. Must have eventually been successful as cng for city busses is pretty widespread now. Look for the raised roof on busses to hide tanks and cng label on back. We had mined limestone caverns for propane storage to create synthetic natural gas for winter peaking. Used compress air and vaporized propane blended to a 1000btu content and injected directly into gas main. Also had a crazy program to make liquified natural gas LNG and actually had a few cars with LNG tanks in the trunk. Dangerous cause the stuff had to be stored at liquified temps and constantly boiled off. Couldn't park inside or smoke. LNG is how nat. gas is now transported world wide in tankers. As a young gas engineer I worked on both programs. Pretty exciting stuff back in the day
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Today's Featured Article - Product Review: Black Tire Paint - by Staff. I have been fortunate in that two of my tractors have had rear tires that were in great shape when I bought the tractor. My model "H" even had the old style fronts with plenty of tread. My "L" fronts were mismatched Sears Guardsman snow tires, which I promptly tossed. Well, although these tires were in good shape as far as tread was concerned, they looked real sad. All were flat, but new tubes fixed that. In addition to years and years of scuffing and fading, they had paint splattered on
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