Adrian Tennant, seen in this 2010 file photo, works Upslope Brewery s canning line. Boulder craft brewers like Upslope have been at the forefront of the
Adrian Tennant, seen in this 2010 file photo, works Upslope Brewery s canning line. Boulder craft brewers like Upslope have been at the forefront of the beer can revolution. ( PAUL AIKEN )