Search the terms Iron Goat & Washington state; the first hit is likely to be the Iron Goat State Park, a trail in Stevens Pass along the old route of the Great Northern. A massive avalanche there in 1913 took out two snow-stalled trains and 93 people. A second hit will be either a trash-recycling sculpture in Spokane's Riverfront Park, built for the 1974 Expo, or Iron Goat Brewing, a brewpub east of downtown, founded in 2012 by two homebrewing couples: Greg and Heather Brandt and Paul Edminster and Sheila Evans.
The 8.5 barrel system comes from Bozeman, where it originated Spanish Peaks' Black Dog Ale line. After Spanish Peaks relocated to California, its hooked-on-Montana staff launched Bozeman Brewing Co. and used this gear until they outgrew it and sold it to these Spokane folks.
What they make here pays homage to the namesake goat. Me, I tried and liked the Goatmeal Stout (5.6%, 29 IBU, good coffee-and-chocolate malts). Other choices had names like Head Butt IPA. Garbage Pail Ale, and Impaler IPA (evidently the house favorite). Pix didn't turn out but it was a nice stop.