National Geographic : 1940 Aug
West Virginia: Treasure Chest of Industry 147 Keeping Tab by Wireless and Telephone on 9,000 Miles of Gas Pipe Hourly messages from 49 West Virginia counties and two other States come to this dispatcher's office in Clarks burg, where the flow is controlled. Gas mains are represented by black lines; pins show pump stations and gates, or valves. An explorer about 1750 relates his discovery of natural gas in what is now West Virginia: "In the middle of a small stream there was a constant bubbling of waters as if a blowpipe was at work at the bottom. The wind came up with a smell similar to that of stone-coal fire. The guide waded in, held the lock of his rifle near the bubbling part of the surface, and pulled the trigger. It flashed, and that instant a fire was blazing on the surface of the water as large as a yard square and two feet high."