Those expecting to find hippies in tie-dyed T-shirts at the inaugural National Cannabis Industry Association’s Cannabis Business Summit last week were in for a rude awakening.More than 1,000 attendees wearing button-down collars and ties gathered at the Colorado Convention Center for a two-day confab to discuss regulations, banking, product lines, insurance, energy efficiency, human resources and other issues related to the burgeoning marijuana industry.

Read more: Tie-dyed no more: At Colorado summit, marijuana industry is serious business | Washington Times