Drip gases, and liquid hydrocarbons produced from tar sands, oil sands, gilsonite, and oil shale. Liquids produced at natural gas processing plants are excluded. Crude oil is refined to produce a wide array of petroleum products, including heating oils; gasoline, diesel and jet fuels; lubricants; asphalt; ethane, propane, and butane; and many other products used for their energy or chemical content.
Measure 91 was the third initiative seeking to legalize marijuana for recreational use in Oregon; previous measures were 1986's Measure 5 and 2012's Measure 80 while medical use of marijuana was legalized in Oregon in 1998. Measure 91 passed by approximately 56% to 44%.
In 1996, California voters legalized medical marijuana through Proposition 215. It was so vaguely worded, however, that by the early 2000s, several hundred pot shops opened in Los Angeles, selling marijuana. A backlash against Prop. 215 formed as cities began trying to reassert control over the shops.