31. Liquefied petroleum gas fracturing was developed by a GasFrac energy company, based in Calgary, Alberta. 32. These versions are stabilized liquefied petroleum gas ( LPG ) with high levels of propylene. 33. There is an acute crisis of Liquefied Petroleum Gas ( LPG ) in Rajshahi City. 34. It also produces liquefied petroleum gas ( LPG ) at its plant in Duliajan, Assam. 35. Vialle started as an importer of liquefied petroleum gas ( LPG ) equipment in 1967. 36. Workers building a new subway line had accidentally punctured a pipeline carrying liquefied petroleum gas . 37. It exported 73, 000 tons of liquefied petroleum gas . 38. Prices for liquefied petroleum gas , such as propane, also fell sharply, dropping 17 . 8 percent. 39. Liquefied petroleum gas , such as propane, rose 15 . 3 percent, the biggest increase since July. 40. South Korea imports 80 percent of its liquefied petroleum gas needs from Qatar, a Gulf country.