Flowery Branch City Council approved a request by Vulcan Materials to expand its quarry operation by an additional 41 acres. Council voted unanimously Thursday to approve annexation and rezoning of the two parcels on Hog Mountain Road near the intersection with Friendship Road/Lanier Islands Parkway. Previously zoned as unincorporated Hall County agricultural/residential, the two parcels will now be considered within Flowery Branch city limits and as M-2, to accommodate blasting and removal of aggregate.