“The explosion almost killed both of them. This butane hash oil is nothing to play with.” Marijuana smokers have been making hash oil using solvents such as butane or ethyl alcohol since the 1960s.

Dear Gene: You’re allowed to make concentrates that don’t require butane, like bubble hash, kief, QWISO hash from rubbing alcohol, and other concentrates extracted with water. As I’m sure you know, ...

If you think the recent liberalization of marijuana laws around the country is only about smoking leaves and buds, think again. For users younger than 25, "hash oil" is where it's really at. This ...

Opponents of marijuana legalization are concerned if Ballot Measure 2 passes, Alaskans would see an increase in butane hash oil, and with that, an increase in explosions in its production, although ...