I recently contacted Central City Brewing regarding speaking with one of their brewers.
My message was passed on to Gary L, their Brewer. He responded the very next day with their response.
He informed me that the ingredients that they use were on their website (which they are, both grains and hops) and he advised me to look there.
I replied with a thank you and mentioned that I would experiment with the recipe.
Nothing ventured, nothing gained I figure.