What trade keeps all our food frozen or cooled so it can safely get to our dinner tables? Answer - Steamfitters. Join Building Wisconsin host Stuart Keith as he meets up with the pros from Summit Refrigeration Group to learn about Ammonia Refrigeration Systems. Owners, Mike Conti, Rick DeGroot and Fred Anderson take us on a tour with the members of Steamfitters Local 601. We visit the Summit fabrication shop, a cold storage construction site and then we'll finish up in the engine room of a massive cold storage food warehouse. Great show and a lot to learn!