![HempCon 2011 Medical Marijuana Expo, Grinders](https://pix.avax.news/avaxnews/5a/39/0000395a_medium.jpeg)
Grinders are on display for sale during the HempCon 2011 Medical Marijuana Expo at the Los Angeles Convention Center on August 26, 2011 in Los Angeles, California. The three-day event includes exhibits, evaluation services, legal services, equipment, and accessories. (Photo by Kevork Djansezian/Getty Images)
27 Aug 2011 14:07:00,post received
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