Processor Calvin Lee shows a regular dried bud (left) and one trimmed by a trimming machine (right) as he works a trimming machine at Butterbrand Farms on Friday, August 18, 2017, in San Francisco, Calif.

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Processor Calvin Lee shows a regular dried bud (left) and one trimmed by a trimming machine (right) as he works a trimming machine at Butterbrand Farms on Friday, August 18, 2017, in San Francisco, Calif.