That means they cant be regarded as safe to use, according to the ATS
[2] [7] Great Midwest Marijuana Harvest Festival The original Yippie smoke-in, first held in 1971 to protest the arrest of Dana Beal on marijuana charges, now the longest running annual cannabis rights "protestival", Marijuana Harvestfest, or Madison Hempfest, as it is also known, was organized by Ben Masel until his death in 2011
Taragin-Zeller, L., Rozenblum, Y., & Baram-Tsbari, A
Older Barlings produced during what is now referred to as the company's "Pre-Transition" era in particular are held in high esteem by many discerning collectors
A study by an insurance company in 2007 found that 45% of all motorists who smoke have had an accident or near miss due to the habit due to dropping a cigarette, taking hands off the wheel to light up, taking a cigarette out of the carton, or visual impairment due to smoke in the car