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Before professional extraction laboratories and closed-loop systems became industry standards, an underground community of cannabis extractors experimented with butane, homemade equipment and new concentrate techniques. Their innovations helped shape modern dabbing culture, but the risks left a devastating legacy.
The Early Days of Butane Hash Oil
The history of butane hash oil (BHO) stretches back to the 1990s, when cannabis extractors began exploring ways to produce highly concentrated resin using hydrocarbon solvents.
Kenneth Morrow places his early BHO experimentation in 1994, making his account an important part of the technique's early history.
In 1999, an individual using the name Indra published a butane hash oil extraction method on Erowid, an online archive documenting psychoactive substances and their use.
The publication helped circulate information about a technique that had previously been discussed within smaller communities.
By 2003, the Canadian-made Honey Bee Extractor had entered the market, reflecting growing interest in accessible extraction equipment.
These developments preceded the widespread commercialization of cannabis concentrates.
TokeCity Was the Underground Classroom
Before social media platforms became central to cannabis culture, online forums served as gathering places for growers, glass artists and extractors.
TokeCity became an influential community where participants shared photographs, discussed equipment and documented their experiences.
Among the notable figures were Hashmasta Kut and his sister, GGirl, who helped popularize early dab rigs through their presence on the forum.
The community connected people experimenting with concentrates to glass artists developing equipment specifically for consuming them.
This relationship helped establish the foundations of modern dabbing culture.
TokeCity was more than a discussion board. It functioned as an informal archive of a rapidly evolving underground movement.
When Household Equipment Became Extraction Equipment
The early open-blast era was defined by improvisation.
Extractors used materials such as PVC tubing, glass turkey basters, coffee filters, mesh screens and Pyrex dishes.
These objects were inexpensive and widely available, making the process appear accessible to people without professional laboratory equipment.
However, the simplicity of the equipment concealed serious hazards.
Household materials were not necessarily designed for solvent exposure, pressure-related risks or the demands of chemical extraction.
The accessibility of improvised equipment helped spread the practice while contributing to dangerous working conditions.
Why Was It Called Open Blasting?
The term open blasting described extraction systems that released butane into the surrounding environment instead of capturing and recovering it.
Butane acted as a solvent, dissolving cannabinoids, terpenes and other compounds from cannabis plant material.
The resulting extract contained concentrated cannabis compounds alongside residual solvent that required removal.
Unlike modern closed-loop extraction equipment, open systems did not contain and recover the butane within a sealed apparatus.
This distinction was critical.
Butane is highly flammable, and its vapor can accumulate in enclosed spaces. Because the vapor is heavier than air, it can collect near floors and travel toward ignition sources.
What appeared to be a straightforward extraction method could create explosive conditions.
The Purge Game: Chasing Cleaner Concentrates
Early extractors experimented with different approaches to removing residual butane from their concentrates.
Historical methods included hot-water baths, household ovens and homemade vacuum chambers.
Vacuum equipment became increasingly associated with concentrate processing because reduced pressure can assist solvent evaporation.
However, the appearance or texture of an extract did not establish whether residual solvent had been adequately removed.
Without reliable analytical testing, extractors could not determine solvent concentrations simply by observing bubbles, consistency or clarity.
The growing emphasis on purging reflected an emerging concern with concentrate quality, but the improvised techniques also introduced additional hazards.
The Shatter Era Changed Cannabis Culture
As extraction techniques developed, cannabis concentrates began appearing in several recognizable forms.
Shatter, wax, budder and sap became familiar terms within the emerging concentrate community.
Shatter was especially recognizable for its translucent, glass-like appearance.
A popular saying captured the preferences of some enthusiasts:
“If it don't shatter, it don't matter.”
The phrase reflected a period when visual appearance became closely associated with perceived concentrate quality.
At the same time, hot titanium nails and specialized glass rigs were becoming important elements of dabbing culture.
These developments changed how cannabis concentrates were consumed and presented.
However, the differences between shatter, wax, budder and sap were not simply measurements of potency.
Their physical characteristics reflected differences in composition, processing and the behavior of the compounds within the extract.
A glassy appearance alone did not establish purity or safety.
Beyond "Poop Soup" and the Mystery Oil Problem
Not every early concentrate was visually appealing.
Dark, harsh and inconsistent extracts sometimes earned the nickname “poop soup.”
The term became shorthand for undesirable concentrates, particularly products associated with poor processing or questionable starting material.
Extractors also began discussing “mystery oil,” a name used for unidentified residues associated with some canned butane products.
These concerns raised questions about the purity of solvents and the possibility of unwanted contaminants entering finished concentrates.
However, color was not a reliable indicator of chemical safety.
Dark concentrates were not automatically contaminated, just as clear shatter was not necessarily free of residual solvents.
The limitations of visual inspection reinforced the eventual importance of laboratory testing.
When Homes Became Blast Sites
The most devastating consequence of open blasting was the risk of explosions.
Improvised extraction operations appeared in kitchens, garages, apartments and other residential spaces.
In these environments, released butane vapor could accumulate without adequate containment or ventilation.
An ignition source could trigger a fire or explosion, causing severe burns, structural damage and injuries to people who had no involvement in the extraction process.
The consequences extended beyond the individuals performing the work.
Neighbors, firefighters, emergency responders and entire residential buildings could be placed at risk.
As the practice spread, reports of explosions became an increasingly visible part of the public discussion surrounding cannabis concentrates.
The Bellevue Explosion That Killed a Former Mayor
One of the most consequential incidents occurred in Bellevue, Washington, in 2013.
A hash oil extraction explosion tore through an apartment complex, causing extensive damage and forcing residents to escape.
Among those injured was Nan Campbell, a former mayor of Bellevue.
Campbell was hurt while escaping the building and later died following complications from her injuries.
The incident became a powerful example of the dangers posed by residential extraction operations.
A man involved in the case subsequently received a nine-year prison sentence.
The tragedy demonstrated that the consequences of unsafe extraction could extend far beyond the people handling the solvents.
Operation Shattered Dreams: Law Enforcement Responds
By 2014, the dangers associated with illegal BHO production had attracted increasing attention from law enforcement.
That year, the Drug Enforcement Administration (DEA) conducted Operation Shattered Dreams, targeting butane hash oil laboratories across San Diego County, California.
The operation resulted in nine arrests.
The investigation reflected growing concern about extraction operations using volatile solvents in uncontrolled environments.
For authorities, the issue involved more than the production of cannabis concentrates.
It also concerned the fire and explosion hazards associated with improvised chemical processing.
The operation became part of a broader enforcement response to the proliferation of dangerous extraction sites.
The Shift Toward Closed-Loop Extraction
Even while open blasting remained common in underground circles, alternative extraction technology was developing.
Tamisium closed-loop extraction systems existed by 2011, offering an approach designed around solvent containment and recovery.
Unlike open systems, closed-loop equipment was intended to keep solvents within a controlled process rather than releasing them directly into the surrounding environment.
As regulated cannabis markets expanded, specialized extraction facilities increasingly adopted professional equipment, engineered safety controls and laboratory testing.
These developments helped establish new expectations for concentrate production.
However, closed-loop equipment alone does not guarantee safety. Proper facility design, trained operators, suitable equipment and regulatory compliance remain essential.
The transition marked a significant change from household improvisation toward more controlled industrial extraction.
Legacy
The open-blast era played an important role in the development of modern cannabis concentrates.
Early experimenters, online communities and glass artists helped establish the techniques, terminology and equipment that influenced contemporary dabbing culture.
Kenneth Morrow, Indra, TokeCity, Hashmasta Kut and GGirl represent different parts of that early history, from extraction experimentation to the popularization of concentrate consumption.
The period also demonstrated the consequences of working with volatile solvents without appropriate safety systems.
Explosions, severe injuries and deaths became part of the history alongside innovations in extraction and glass design.
Modern concentrate production owes much to the experimentation of earlier generations, but its movement toward closed-loop technology, specialized facilities and laboratory testing reflects lessons learned from the dangers of open blasting.
The era helped shape modern cannabis concentrates, but it left lasting scars.
Sources
Indra. “Hash Honey Oil Technique / The Boffo Butane-PVC Hash Oil Extractor: Trash leaf to honey oil in minutes.” Erowid, Cannabis Vault. Revision history: version 1.0, 1 May 1999, original text by Indra — the primary source for the 1999 butane-through-PVC extraction method published on Erowid.
Weedmaps. “What Is BHO? Butane Hash Oil (BHO) Definition.” Records that on May 1, 1999, Indra added instructions to Erowid on how to “turn trash leaf to honey oil in minutes,” the first mention of butane as a solvent for cannabis extraction, and describes the open-blast era that followed.
Leaf Magazines. “Cannthropology: Titan of Terps Ken ‘K’ Morrow.” 11 Sept. 2024. Profiles Kenneth Morrow of Trichome Technologies: he conceptualized the company in 1994, produced ice hash as early as 1995, and in 2000 wrote the first article ever published on butane hash extraction, in Red Eye Magazine, detailing “open blasting” using PVC pipe.
Beard Bros Pharms. “Breeding the Culture: K of Trichome Technologies.” 5 Aug. 2021. Records that Morrow wrote the first article describing a large-scale cold-water hash extraction method he developed in 1994, and separately wrote the first article describing BHO extraction, for Red Eye Magazine.
Mamakind. “Honey Oil Made Easy.” Cannabis Culture Magazine, Issue 45; reposted 4 Dec. 2003. A contemporary 2003 review of the Honey Bee Extractor — “Like Bubble Bags, the Honey Bee Extractor is a Canadian-made product” — describing the plastic tube, a butane can fitted into the top, and extraction over a Pyrex bowl.
Weedmaps. “What Is a Dab Rig? Dab Rig Definition.” Credits the brother-and-sister glassblower duo Hashmasta Kut (HMK) and GGirl (Lucy Carson) as originators of the first dab rigs around 2006, with a titanium swing and skillet design, and notes their pieces were popularized by Toke City, a highly influential online forum in the days before social media.
U.S. Department of Justice, U.S. Attorney’s Office, Western District of Washington. “Former Bellevue Resident Whose Drug Manufacturing Sparked Explosion and Fire Sentenced to Nine Years in Prison.” 2015. David Richard Schultz II was sentenced to nine years for using butane gas to make hash oil at the Hampton Greens Apartment complex in Bellevue on November 5, 2013; former Bellevue Mayor Nan Campbell suffered a broken pelvis escaping the flames and later died following complications; the fire caused $2 million in property damage.
Toke of the Town. “Undercover DEA Op Busts 9 in San Diego Hash Oil Sting.” Sept. 2014. Reporting the DEA’s September 16, 2014 arrests of nine San Diego area residents at the end of a yearlong investigation dubbed Operation Shattered Dreams, with raids from Chula Vista to El Cajon and several active hash oil labs found.
Mr.Mow. “New Tamisium.” THCFarmer, 8 Mar. 2011. A Tamisium Extractor owner reporting in March 2011 that his “Super Deluxe” system had arrived and discussing butane loading and solvent recovery with other owners — evidence Tamisium closed-loop systems were sold and in use by 2011.
Tamisium Extractors Inc. “TE-175 (2 Ounce).” Manufacturer’s description of the Tamisium as a “closed passive system” that allows n-butane to be used as a liquid solvent and recovered and reused, in contrast to open blasting.
Jelinek, Chris. “Butane Hash Labs — an Explosive Threat.” Firehouse, 27 Apr. 2017. Fire-service account: butane is odorless, colorless and heavier than air, with a flammable range of 1.8–8.4 percent; it can migrate low to the ground toward a distant ignition source and flash back. Defines open blasting as the technique in which the butane solvent evaporates into the surrounding air, and lists the improvised kit of PVC or glass extraction tubes, coffee filters and Pyrex dishes.
“Prehospital Ramifications of Butane Hash Oil Synthesis and Use.” Journal of Emergency Medical Services (JEMS). Cites the U.S. Fire Administration’s February 7, 2013 alert that BHO-related fires and explosions were increasing and might resemble pipe bomb or methamphetamine lab explosions; its case reports document residential BHO explosions causing burns over 80%, 45% and 28% of the body.
Luna Technologies. “Getting to Know (and Love) Butane.” 6 July 2025. Its “What Is Mystery Oil?” section describes mystery oil as a leftover gas residue with a rubbery, tire-like smell that open blasting leaves in the final product, and notes the leading explanations — longer-chain oleaginous waxes, trace sulfur, or can-filling lubricant — while stating no scientific studies have shown either hypothesis to be correct.
Skunk Pharm Research (GrayWolf). “BHO Extraction.” Early extractor-community reference: n-butane’s principal contaminants include low levels of heavier, longer-chain molecules “often referred to as Mystery Oil,” found in a third-party forensic lab analysis of canned butane at parts-per-billion levels, and removable by pre-distilling the butane.
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