Two are dead and over 25 buildings damaged after a cataclysmic explosion at a cannabis facility in Sand Springs, Oklahoma last week.
According to initial reporting by KTUL, the blast happened at 1:30am, and literally blew the roof off the building, sending out shockwaves that could be felt up to 30 to 40 miles away.
“It was like around 1:20, 1:25. And it was just a big boom,” local man Donovan Ruffin, who lives a mile away from the blast, told the news channel. “Me and my wife woke up at the same time. And as soon as I heard it, I woke up… I have a window right by my bed, so I seen a flash.”
Ryan Bassham, the owner of the THC facility where the explosion occurred, was later arrested on murder charges, People reported, after defying an order from the fire marshal to halt extraction operations.
One explanation being offered up — though not officially confirmed — is that the explosion traces back to the use of butane to produce THC concentrate.
One of the more popular methods by which the cannabis industry produces concentrated products like rosin is through a process known as butane hash oil (BHO) extraction. Basically, producers use liquid butane as a solvent, pouring it over raw plants at temperatures in the ballpark of -40 degrees Fahrenheit.
Because liquid butane has an exceptionally low boiling point — 30.02 degrees Fahrenheit to be exact — the solvent can be easily cooked off after mixing with the plant matter, leaving just the dissolved cannabinoids behind. Though this is said to be one of the most straightforward methods for concentrating cannabis, the use of highly flammable butane makes it one of the most dangerous.
As the publisher Technology Networks explained in a blog post on BHO extraction, a “faulty gasket or improper check could lead to disaster.”
Overall, there is no national count of BHO-related explosions or injuries, so it’s difficult to say how common an occurrence it is. According to one clinical study conducted at the burn unit of the University of California, Davis Medical Center, there were at least eight BHO-related hospitalizations between 2011 and 2012, though that number is likely higher today after a decade of legalization and cannabis industry growth.
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