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2011-2014 reports: Sylmar explosion, Cal/OSHA penalties, trade-press review, 2026-10-04

Sites: Press-Telegram (AP story), Los Angeles Daily News, Fire Engineering, Fuel Cell Nation blog. Found via Google queries: - "Family sorrow in fuel quest" Larson - Cal/OSHA fines 3 businesses Sylmar "Rainbow of Hope" "Strategic Sciences" 2012 - "Realm Industries" OR "Strategic Sciences" Larson Cal/OSHA citation OR fine OR lawsuit OR charged - "Realm Industries" Simi Valley explosion 2010 victim (Fire Engineering hit)

A. Associated Press, 11 August 2011, "Family sorrow in fuel quest" (Press-Telegram) [web: https://www.presstelegram.com/2011/08/11/family-sorrow-in-fuel-quest/]

  • Timothy A. Larson, a San Fernando Valley attorney (he represented about 640 Lockheed workers in a 1992 toxic-exposure settlement), bought the company "because he believes in the technology".
  • Stehl's attorney James Long: once investigators were looking into the businesses, Stehl could no longer raise money, and in 2005 sold Rainbow Technology's patents and equipment to Larson. Stehl stayed on as an adviser. Long insisted his client's businesses were legitimate (the defence side's characterization).
  • AUSA Dooley: "Larson's motivation was that he thought there was something to the technology."
  • Court filings describe Stehl as claiming a process that converts water into "a gaseous fuel compound through an electromagnetic process". The same pair also ran ventures selling gold-backed bonds in Vietnam and online gaming (per court records).
  • Cal/OSHA on the 2010 death (per AP): no direct witnesses were identified and numerous documents were lost in the explosion; it found that three containers used to generate and store pressurized fuel failed. No accident-related citation was issued for lack of conclusive evidence. Realm Industries got three citations totalling $5,685 (unpermitted air compressor; tampering with an inadequately maintained pressure vessel). The company appealed; a hearing was held in August 2011.
  • 9 August 2011, Sylmar: the firm, "since renamed Rainbow of Hope", was "extracting hydrogen from water" and moving gas from one cylinder to another when it exploded (Cal/OSHA). Timothy B. Larson (42, the other son, an LA firefighter on disability leave) and Stehl (68) were severely injured.

B. Los Angeles Daily News, 9 February 2012, "Cal/OSHA fines 3 businesses more than $500K for Sylmar blast", by Dana Bartholomew [web: https://www.dailynews.com/2012/02/09/calosha-fines-3-businesses-more-than-500k-for-sylmar-blast/]

  • Cal/OSHA fined Realm Catalyst Inc., Rainbow of Hope Foundation and Strategic Sciences Inc. a combined $540,890, with "willful serious" citations to Rainbow of Hope and Strategic Sciences. Spokeswoman Erika Monterroza: "The companies had a similar incident in the past, and ignored it."
  • A Cal/OSHA report quoted: the blast happened as Timothy B. Larson and Stehl prepared equipment for an upcoming sales demonstration for Strategic Sciences to promote "TyLar gas". A TyLar cylinder blew up while being handled in a "non-intrinsically safe work area". The agency concluded that oxygen and hydrogen were stored together in the same tanks, and that flammable gas handled in non-explosion-proof areas contributed directly. Two companies got $67,500 fines for handling flammable gas near electrical equipment.
  • Corporate record: Realm Catalyst was owned by Timothy A. Larson and dissolved in November 2011 (California Secretary of State). Rainbow of Hope was registered at Stehl's Oxnard home. Strategic Sciences listed a Wilshire Blvd address; its CEO, LA accountant Dale Zuehls, was also president of Realm Catalyst per Cal/OSHA. Zuehls said he only registered and dissolved the companies, and that Strategic Sciences, dissolved in California in 2008, was now registered in Nevada.
  • Cal/OSHA's Bureau of Investigation might pursue a criminal referral to the LA District Attorney (outcome unknown).
  • The article calls the Sylmar process "Brown's gas" ("boom gas"), electrolysing water into oxygen and hydrogen. That is the reporter's characterization.
  • It says Tyson Larson "had just won a patent with William A. Stehl". The CIP was in fact granted on 14 Sep 2010, after his death.
  • Ages differ between sources: Stehl is 66 here, 68 in the AP story (Aug 2011) and 69 in DOJ (Sep 2014).

C. Fire Engineering, 1 December 2014, "The Dangers of Hydrogen-Based Experimental Fuels" [web: https://www.fireengineering.com/firefighting/the-dangers-of-hydrogen-based-experimental-fuels-full/]

Trade-journal safety article (fire-service viewpoint). Part of the body was read from a screenshot; after a newsletter pop-up was closed, the article body stopped rendering, so the rest was not read. - Lists the company names in sequence: BGX Technologies, Rainbow of Hope Technologies, Realm Industries, then "Sylmar" (as it calls the last firm), all owned by the same individual, making a hydrogen-oxygen mixture by electrolysis. - Cites a report by Strategic Sciences, Inc. "in conjunction with" the EPA: at least four explosions linked to the process, including two unreported explosions in 2008, then the 2010 fatal one, then the 2011 Sylmar one. - The gas was produced "through Sylmar's own patented process" and compressed into high-pressure cylinders, and was called "Tylar". The article calls it Brown's gas / Knallgas (a 2:1 hydrogen-oxygen mix). - Context it gives: carbon-steel cylinders and hydrogen embrittlement (Sandia technical reference); CGA P-57-2013 on CO/CO2/water stress-corrosion cracking. These are the article's general hazard explanations, not findings about Realm's own cylinders. - Next run: the full text, and the "Strategic Sciences report with EPA" it cites (probably the EPA POLREPs).

D. Fuel Cell Nation blog, Keith D. Patch, 26 Aug 2011, "Electrolysis Explosions in California" [web: https://blog.fuelcellnation.com/patents/ (post on the "patents" category page)]

  • A hydrogen fuel-cell advocate's blog, so an interested party: it argues against "water fuel" claims. It summarises the AP and Adirondack Daily Enterprise reports (Stehl's 2010 indictment; BGX Technologies, formerly Rainbow Technologies; Larson buying the equipment) and reproduces a patent figure. It adds no primary facts beyond those reports.

Bearing on the claims

  • Claims 2-3: Cal/OSHA's finding that hydrogen and oxygen were stored in the same tanks is a regulator's description of what the company actually stored. Together with the MSDS (EPA note), it is the strongest available record of what the "vapor" was handled as in 2011. It is not a chemical analysis of the 2007-2008 test vapor.
  • Historical record: the work continued after 2010 under new company names and a new product name (TyLar, apparently from Tyson Larson), was being commercialised (sales demonstration; export to Korea), and stopped after the 2011 explosion, the penalties and the 2011-2014 federal case.