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File: Marijuana plants grow at Perennial Holistic Wellness Center, a not-for-profit medical marijuana dispensary in operation since 2006, on September 7, 2012 in Los Angeles.
There have been plenty of reports about the dangers of manufacturing meth. But now, physicians are seeing patients with terrible burns incurred from working with marijuana. They're manufacturing a product called butane hash.
For more on what this is and why it's so dangerous to make, we turn to Joe Mozingo of the LA Times who recently wrote about it.